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Digital AC/DC Multimeter 4 Data Display Voltage Current Power Energy

[toggle title=”Check the other Meter” state=”open”]Dual Display: DC Voltmeter Ammeter       Volt Display: DC Voltmeter      Amp Display: DC Ammeter[/toggle]

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126 Comments

  1. ALOK RANJAN December 22, 2015 at 6:43 am - Reply

    Hi

    i am interested in your DROK® Small Digital Amperemeter Voltmeter Multimeter 0.28″ DC 100V 10A. please provide the datasheet and complete coc of this product.

    please find the below details

    Brand DROK
    Item Weight 0.3 ounces
    Product Dimensions 1.9 x 1.1 x 0.8 inches
    Item model number 100014
    Manufacturer Part Number 100014

    link:-http://www.amazon.com/gp/product/B017FSED9I/ref=as_li_tl?tag=proeng-20&keywords=digital+multimeter

    Thanks & Regards
    ALOK

    • Drok December 22, 2015 at 7:47 am - Reply

      Dear friend
      Thank you for your message.
      Because this is the electronic product for DIY purpose. we are sorry that this item do not have datasheet.
      All the item detail has been written on the description.
      Here is the description:
      Features:
      Operating voltage:DC 4.5 ~ 30V
      Measure voltage: DC 0 ~ 100V
      Minimum resolution(V): 0.1V
      Measure current :10A (measure directly,built-in shunt)
      Minimum resolution(A): 0.01A
      Operating current: <20mA
      Display: three 0.28" LED digital tube
      Display color: Red and Blue (two-color display)
      Dimensions: 48 x 29 x 21mm
      Mounting cutout: 45.5 x 26.5mm
      Refresh rate: about 500mS / times
      Measure accuracy: 1% (± 1 digit)
      Operating temperature: -10 to 65° c
      Operating Humidity: 10 to 80% (non-condensing)
      Working pressure: 80 to 106 kPa
      Applications:Suitable for automotive/electric cars/motorcycles battery monitoring or other products voltage current measurement

      Wiring:
      Black line (thin): vacant or buck circuit (module) negative
      Red line (thin): power supply+
      Black line (thick): COM, common measuring
      Red line (thick): PW+, measuring terminal voltage input positive
      Yellow line (thick): IN+, current input+
      Thanks for your understanding.
      If you have any question, please write back us. we always here assist you.
      Best regards

  2. tony george January 22, 2016 at 10:26 pm - Reply

    do u make a current coil which can be clamped around the wire to measure current, instead of opening the circuit

    • Drok January 25, 2016 at 8:52 am - Reply

      Dear Tony,
      We feel greatly sorry to tell you that we don’t have the one you mentioned.
      Probably, you can find them on Amazon.
      Hope this will help you.
      Best regards

  3. Raul Gonzalez February 17, 2016 at 7:55 am - Reply

    Hello, can i measure the charge and the discharge of amp with “+” and “-” value???

    Thank you.

    • Drok February 18, 2016 at 3:14 am - Reply

      Hello Raul Gonzalez,
      Could you please tell us the ASIN of the product you are referring to?
      Because not all the meter can measure the “-” value.
      If you do not expect specific products, here is some recommendations for you: B019R8IFB6; B019R8JZ2O; B019R8LMDO.
      These meters can measure both “+” and “-” value.
      Hope this will be helpful to you.
      Best regards

  4. Lou February 25, 2016 at 3:33 pm - Reply

    I am interested in installing a B017BCXQ06 panel meter in a RV to monitor the battery condition. Is it possible to use a Hall Effect current sensing ring in place of the shunt to monitor amperage? Is it possible to scale the amperage readout of the meter to calibrate it to the input from the sensor? If so, what ring sensor would work?

    • Drok February 26, 2016 at 1:57 am - Reply

      Hello Lou,
      The shunt and the Hall Effect current sensing ring are totally different current measuring components.
      Therefore, the shunt cannot be replaced by the Hall Effect current sensing ring.
      Hope this will be helpful to you.
      Best regards

  5. troy March 2, 2016 at 5:21 pm - Reply

    hi please read your emails from troy pointer thanks

  6. Michael March 29, 2016 at 4:07 pm - Reply

    Hi,

    Is DROK® Digital Multimeter AC 80-260V 20A Voltage Amperage Power Energy Meter, AC Volt Amp Testing Power Energy Monitor LCD Digital Blue Backlight Display with Built-in Current Shunt reads True RMS amperage?

    • Drok March 30, 2016 at 2:23 am - Reply

      Hello Michael,
      Thank you for writing in.
      This product cannot read True RMS amperage.
      It can display current value in real time but cannot record the values.
      Hope this can help you.
      Best regards

  7. John Lussmyer April 9, 2016 at 5:43 am - Reply

    Is there any chance that you will make a 200A version of the B015PRF04I meter?

    • Drok April 10, 2016 at 1:58 am - Reply

      Hello John Lussmyer,
      Thank you for your interest in our product.
      So sorry that We do not have a 200A version now.
      Beg your understanding.
      Best regards

  8. Imetrilec April 20, 2016 at 10:37 pm - Reply

    The B017BDQHE6 comes with the shunt?

    • Drok April 21, 2016 at 1:32 am - Reply

      Hello Imetrilec,
      Thank you for writing in.
      Yes, the meter comes with 100A/75mV shunt.
      Hope this can help you.
      Best regards

  9. rigaux April 21, 2016 at 9:15 am - Reply

    Hi, what is the difference between B015GQOLU2 and B0156F3DVQ (both on amazon uk)

    thanks

    lionel

    • Drok April 22, 2016 at 1:43 am - Reply

      Hello rigaux,
      Thank you for your interest in our product.
      The current measuring range of these two meters are different.
      The current measuring range of B015GQOLU2 is AC 0-20A.
      The current measuring range of B0156F3DVQ is AC 0-100A.
      Hope this can help you.
      Best regards

  10. Mac April 27, 2016 at 6:34 pm - Reply

    I bought the B017BDQHE6 model (0-100A) with shunt to connect to my son’s Go-Kart (Razor Ground Force). I’ve followed the wiring exactly as listed, checked and double checked. The “LOAD” in my circuit in the controller. Everything powers up nicely with no load, i.e. throttle not engaged. However, once the throttle is depressed, all the digits come on and the display flashes. It reverts to ‘normal’ once the throttle is released in that it shows the correct voltage. What could be causing this, and more importantly how do I rectify this?

    • Drok April 28, 2016 at 1:44 am - Reply

      Hello Mac,
      Thank you for writing in.
      Could you please send us an email (service at droking dot com) to tell us more details of how you operate the product, such as the input voltage/current, the wiring?
      If you can, we sincerely hope that you can send us some images or video to let us check the problem details.
      Waiting for your reply.
      Best regards

      • Mac April 28, 2016 at 5:05 pm - Reply

        Ok. Will do.

  11. Kevin Bleakley May 11, 2016 at 7:31 pm - Reply

    I purchased a B014W3D1OC Digital Multimeter on Amazon. I wired it correctly to test it and it worked fine. I assembled it into a junction box with a 120V duplex outlet. I had to disconnect the wires to put it in the box, and I accidentally reversed the wires. This put 120 VAC into the CT inputs.

    When I plugged it in, there was a puff of smoke and that was it.

    After rewiring it correctly, the voltage reads right but the current always reads 0.91 amps and the power reads low.

    I ordered a replacement at Amazon. I really like the product. I’ll probably rate it 5 stars when I receive the new one Friday. I’ll include a picture of my power meter box.

    • Drok May 12, 2016 at 2:32 am - Reply

      Hello Kevin Bleakley,
      Thank you for your business and appreciation.
      As your description, since the CT was connected to the input of the 120V AC, the CT was burnt.
      And there was a puff of smoke when you plug it in, which means the meter may be burnt, too.
      Please check the wiring before plugging in.
      Hope this can help you.
      If you have any questions,please feel free to contact us.
      Best regards

    • Maud January 7, 2017 at 10:00 pm - Reply

      Too funny! I'm a magazine editor and journalism teacher. I'm going to share this one with my students next semester. They will get such a kick out of it! [ .fsio{poqition:absolute;clkp:rect(445px,auto,autj,488px);}approval ]

  12. Jef May 16, 2016 at 11:41 pm - Reply

    I have a DC multimeter with the 50 amp shunt. In the wiring diagram it shows the shunt connected to the (-) negative side of the load. Is it possible to connect the shunt to the (+) positive side?

    • Drok May 17, 2016 at 1:46 am - Reply

      Hi Jef,
      Thank you for writing in.
      Could you please tell us your order ID or the link of the product?
      With your help, we can find a solution more quickly.
      Best regards

      • Jef May 17, 2016 at 9:45 pm - Reply

        It is the US Amazon #B017BCXQO6

        • Drok May 18, 2016 at 2:44 am - Reply

          Hi Jef,
          The shunt should be connected to the (-) negative side of the load but not the (+) positive side, or the meter will be burnt.
          Hope this can help you.
          Best regards

  13. Jef May 17, 2016 at 3:33 am - Reply

    It is the US Amazon #B017BCXQO6

  14. David H. May 18, 2016 at 5:30 pm - Reply

    Hello,
    I would like to use one of your 12V DC multimeters, but I cannot find a size for the current shunt.

    Can you please provide dimensions for the 50A and 100A current shunts used in the B017BDQHE6 and B017BCXQO6 products?

    Also, I hope you can consider a new meter type in the future to measure + and – power (watt hours). I think at this time only choice is to use two meters with the current sensing wires reversed.

    Thank you,
    David H

    • Drok May 19, 2016 at 2:18 am - Reply

      Hi David H.,
      Thank you for your message and valuable suggestion.
      The dimension of the 50A/75mV shunt is 120*25*8mm (L*W*H)
      The dimension of the 100A/75mV shunt id 105*22*8mm (L*W*H)
      Please note that since it is handicraft operation, there may be slight error, beg your understanding.
      Hope this can help you.
      Best regards

  15. David H. May 26, 2016 at 3:36 pm - Reply

    Can you please email a manual for B017BDQHE6 to me?
    I am most interested in setup functions, and if there is ability to calibrate the readings. Specifically, how to configure for 100A current Shunt (should be default setting I think).

    Thank you,
    David H.

    • Drok May 29, 2016 at 2:34 am - Reply

      Hi David H.,
      Thank you for your interest in our product.
      Here is the datasheet of the product.
      DATASHEET_200141
      Hope this can help you.
      Best regards

      • Marni January 8, 2017 at 12:21 am - Reply

        You really found a way to make this whole proescs easier.

        • Drok January 10, 2017 at 9:59 am - Reply

          Hello, Marni
          Thank you for writing in.
          And we are glad to hear that.
          Hope we can give you the best service.

  16. Rock Weir June 6, 2016 at 2:43 pm - Reply

    Need manual for DROK® Small Digital Multimeter DC 6.5-100V 50A Voltage Amperage Power Energy Meter DC Volt Amp Tester Watt Meter Gauge Monitor LCD Digital Display with Blue Backlight with 50A/75mV Shunt

    • Drok June 7, 2016 at 3:56 am - Reply

      Hi Rock Weir,
      Thank you for writing in.
      Here is the datasheet for the product:
      DATASHEET_200140
      Hope this can help you.
      Best regards

  17. Ian July 20, 2016 at 1:41 pm - Reply

    Hi, I bought one of these: DROK® Digital Multimeter AC 80-260V 20A Voltage Amperage Power Energy meter.

    I installed it correctly and it seems to function but even on a very light load (40W) the display starts to darken (black) from the left side of the screen and slowly creeps out larger and larger. The left side of the unit where it goes black also gets very warm to touch. I thought it may be because of the backlight being on and then tried it switched off but it does the same. After cooling down it displays normally again for five minutes or so and then goes black. I am using this on the load side of an inverter in my van.

    Can you please tell me what is wrong?

    Ian

    • Drok July 21, 2016 at 2:10 am - Reply

      Hello Ian,
      Thank you for writing in.
      This meter cannot be applied to the inverter.
      Because the interference of the inverter is very large which will cause the power resistance inside of the meter severe heat and the display will become black, like your case.
      If you need to apply the meter of RC Buck principle, the output of the inverter should be pure power frequency waveform (i.e., exactly the same as city power) and low interference and harmonic.
      Hope this can help you.
      Best regards

  18. Ian C July 28, 2016 at 2:01 pm - Reply

    Hello,

    I have a concern about the DROK AC 80-260V 100A LED power meter, type B015GWOT26, for sale on Amazon UK.

    I have measured the resistance between the four screw terminals on this meter and found that the inner two terminals are connected together internally. So, one of the CT terminals is connected to one of the voltage input terminals. Since the meter voltage input terminals can be connected either way round to the 240V AC mains supply, if the live wire is connected to the inner terminal and the neutral wire to the outer terminal, the current transformer will be at mains potential.

    Whilst the transformer appears to be well insulated, many users have complained about the CT leads being too short. They may well attempt to extend these without realizing that unless they take extreme care, they could receive a nasty shock!

    Perhaps the instruction sheet should warn users about this and advise that the meter is connected to the mains supply with the live wire to the outer terminal.

    • Drok July 29, 2016 at 2:20 am - Reply

      Hello Ian C,
      Thank you for writing in.
      This meter is for high-voltage application and four terminals are with power not only the terminal which is connected to the live wire.
      Therefore, the lead wires should be well insulated and not to touch the four terminals when the meter is powered on.
      We will add a warm tip in the instruction sheet and the product page.
      Thank you again for your valuable suggestion.
      Have a nice day!
      Best regards

  19. GKW August 6, 2016 at 8:12 pm - Reply

    I wish your multimeters listed the wire gauge that the terminals accepted in the descriptions.

    • Drok August 7, 2016 at 1:57 am - Reply

      Hello GKW,
      Thank you for writing in.
      The wire gauge which is equipped with the product are accepted by the terminals.
      Hope this can help you.
      Best regards

  20. Macbadger August 10, 2016 at 4:46 pm - Reply

    Hi I purchased a DROK® Digital Multimeter AC 80-260V 100A Voltmeter Ammeter Power Energy Monitor Panel Meter Electricity Meter LCD Blue Backlight Display with Transformer CT from Amazon on the four terminals are the two outer terminals the live connection?

    • Drok August 11, 2016 at 6:31 am - Reply

      Hello Macbadger,
      Thank you for writing in.
      Here is an image that we think it is useful to you:
      Wiring diagram_200123
      Hope this can help you.
      Best regards

      • Mark August 23, 2016 at 11:10 pm - Reply

        Is it possible for this unit to measure one leg of a 480V 3 phase system to ground (277V)?

        • Drok August 24, 2016 at 1:12 am - Reply

          Hello,
          Thank you for writing in.
          Could you please tell us the Asin or the link of the product?
          With your help, we can find a solution more quickly.
          Best regards

  21. Macbadger August 11, 2016 at 7:53 pm - Reply

    Thanks , I have it wired as above but only the 240 volts showing all others at 00 please advise.

    • Drok August 12, 2016 at 1:49 am - Reply

      Hello Macbadger,
      You’re welcome.
      This problem may be caused by that the wire through the current transformer is wrong.
      The wire through the current transformer should be the Null (Zero) wire or the live wire of the power supply of the load.
      Do not make both of them trough the transformer or make the power supply wire of the meter through the transformer.
      Please check your wiring again.
      If it still cannot work, please write back to us and tell us more details of your application, scuh as the load, the input voltage/current, the wiring.
      It is better that you can send us some images to let us check the problem details.
      You can send this information to us by email (service at droking dot com).
      Hope this can help you.
      Best regards

      • Macbadger August 12, 2016 at 2:09 pm - Reply

        I did not have the live in the ring it works now many thanks, I am monitoring the amps while on a campsite in my motorhome so I don’t overload is the unit accurate for this application?

        • Drok August 15, 2016 at 3:13 am - Reply

          Hello Macbadger,
          As lons the measuring value ranges and the operating value ranges are within the parameters of the product, the product can be work for your application.
          However, please check that if there is inverter in your application, if yes,this product cannet be used in your application.
          Hope this can help you.
          Best regards

  22. John August 31, 2016 at 9:05 am - Reply

    Hi, I bought a: DROK® Digital Multimeter AC 80-260V 20A Voltage Amperage Power Energy meter. http://www.amazon.co.uk/gp/product/B015GQOLU2. I am going to connect it to a Generic Pure Sine Wave Power Inverter 1500W DC 12V to 230V AC.

    would you have a diagram showing the correct connection i should use to the inverter please.
    Best Regards
    John

    • Drok September 2, 2016 at 2:11 am - Reply

      Hello John,
      Thank you for writing in.
      There is a wiring diagram on the back of the meter,like the following image show.

      Please note that inverter is a speciall application.
      This meter can be used in high quality and low output harmonic interference pure sine wave inverter, otherwise, the meter will be burnt.
      We are not clear the technical characteristic of your power inverter, so we cannot ensure if this meter can be used in your application.
      Hope this can help you.
      Best regards

  23. jeff September 27, 2016 at 5:20 am - Reply

    On the SKU:200139 model used to measure the current into a battery from a solar panel -via a charge controller- do i cut the negative wire to the battery terminal and put the terminal end into the top screw (marked -) and the other end into the bottom screw (marked +) and just connect the inner two screws to the battery + and – as shown on the unit. Is there a diagram?

    • Drok September 28, 2016 at 1:40 am - Reply

      Hello jeff,
      Thank you for writing in.
      Here is an image that we think it is useful to you.
      Wiring Digram_200139
      Hope this can help you.
      Best regards

      • jeff September 28, 2016 at 3:58 pm - Reply

        Thank you! If you showed the (internal) wiring of the shunt on the ammeter diagram it would stop my confusion. Can the wires to the load be reversed or not? If not, why mark them pos and neg? My load as i said is a car battery that is being charged by solar. What will the current do when the sun goes down and the battery wants to flow back from the battery through the ammeter?? Thanks for the quick response….jeff

  24. jeff September 29, 2016 at 12:52 am - Reply

    I meant that the CURRENT wants to flow back, sorry. I did a little test. It seems like terminals 1 and 2 are wired together and 3 and 4 similarly. I though a shunt had to go in-line?? Anyway, I put a bulb where you have the load and it lights but no current reading. But if i put the bulb between your white wire on your diagram above, and the black terminal on your diagram with the yellow clip disconnected it works. Need help…..thanks

    • Drok September 29, 2016 at 2:02 am - Reply

      Hello jeff,
      This product has a built-in shunt,which no need to connect another shunt.
      The bcurrent wants to flow back, which means the direction of the current changes to reverse direction.
      This meter cannot measure current of reverse direction, so the current will display “0”.
      The wires to the load cannot be reversed, otherwise, the meter will be burnt.
      There is a simple wiring indication on the backside of the metes, like the following image shown:
      Backside wiring diagram_200139
      Hope this can help you.
      Best regards

      • jeff September 30, 2016 at 12:08 am - Reply

        Doesn’t help. My final question. Can you use this to measure the charging current going into a battery. Note – it doesn’t work if you put the battery where the load should go. Thanks

        • Drok September 30, 2016 at 1:28 am - Reply

          Hello jeff,
          Thank you for your reply.
          Yes, it can.
          Could you please send us some images of your wiring to let us check the problem details?
          You can send the images to us by email (service at droking dot com).
          Looking forwards to hearing from you.
          Best regards

          • jeff September 30, 2016 at 1:57 am

            It’s the exact set-up as you have above but the 12v car battery replaces the green load. Before inserting your ampmeter, the 13v charging supply is connected across the battery, red to red, black to black. How to hook up?

        • Daisy January 8, 2017 at 1:44 am - Reply

          Sharp thkignni! Thanks for the answer.

  25. jeff October 4, 2016 at 2:17 am - Reply

    How do you connect this to a car battery to check the charging current please.

  26. jeff October 5, 2016 at 5:28 pm - Reply

    Is this really such a hard question? I’ll have to return it if no response today.

    • Drok October 8, 2016 at 3:20 am - Reply

      Hello jeff,
      Sorry for the our late reply.
      Since it is the vacation of the National Day of China, we cannot give you a reply at once.
      We must apology for the inconvenience caused on you.
      We have send you an wiring diagram in previous message.
      It is better that you can send us an image of your wiring to let us check the problem details.
      With your help, we can find a solution more quickly.
      Hope you can understand.
      Best regards

      • J P GAMACHE October 28, 2016 at 7:22 pm - Reply

        just receive DC AMP meter instruction to connection not clear, there are 3 wires to connect yellow red black, i guess ; black on one side of the shunt yellow on the other side of the shunt and red on positive of the battery,shunt being on negative of battery

        • Drok October 29, 2016 at 1:25 am - Reply

          Hello J P GAMACHE,
          Thank you for writing in and so sorry for the inconvenience caused on you.
          Could you please tell us your order ID or the link of the product so that we can ensure which product you have bought?
          With your help, we can find a solution more quickly.
          Best regards

  27. Paul November 19, 2016 at 3:27 pm - Reply

    Hello,

    I am helping my daughter on a school science fair project where we want to measure the current output of a solar panel. We are setting up a Arduino data logger to log the current measurements and I am looking for a digital Ammeter where it displays the current (as your products do), but I also want to have a digital out to the data logger. Do you have a meter that has a digital output or where the circuit is exposed so that I can solder a wire on the digital out pin?

    Thank you for your help!

    Best regards,
    Paul

    • Drok November 20, 2016 at 7:31 am - Reply

      Hello Paul,
      Thank you for your interest in our product.
      We have checked our products that we do not have an ammeter with data logger.
      Hope you can understand.
      Best regards

  28. willowx November 19, 2016 at 8:38 pm - Reply

    can i connect the DC 100A Digital LED Power Meter Monitor between charge controller and battery? and the battery being the load?my purpose is the total Wh generated

    • Drok November 20, 2016 at 2:50 am - Reply

      Hello willowx,
      Thank you for writing in.
      Could you please send us the link of the product so that we can ensure which product you are referring to?
      In your application, do you want use the charger controller to charge for the battery?
      With your help, we can find a solution more quickly.
      Best regards

  29. kappa December 12, 2016 at 8:44 am - Reply

    hello can I use the drok meter to measure the energy (kwh) generated from a solar panel or a solar array

    • Drok December 13, 2016 at 2:08 am - Reply

      Hello kappa,
      Thank you for your interest in our product.
      We have check the post that there are various meter in this post.
      Could you please tell us which product you are referring to?
      With your help, we can find a solution mmore quickly.
      Best regards

  30. Chris December 18, 2016 at 11:47 am - Reply

    Hello:

    I have purchased ‘DROK® Digital Multimeter DC 6.5-100V 20A Voltage Amperage Power Energy Meter DC Volt Amp Testing Gauge Monitor LCD Blue Backlight Digital Display with Built-in Shunt’ from Amazon.uk to use on my boat.

    I have two 12v batteries connected in parallel and would like to monitor their status. In this application are ‘The Load’ and ‘DC Supply’ connections effectively the same? Do I connect both pairs of terminals to the battery terminals?

    (The same batteries are charged by an alternator on the boat engine, and by a similar DC voltage input from a solar panel controller.) Thank you for your help.

    • Drok December 19, 2016 at 1:57 am - Reply

      Hello Chris,
      Thank you for writing in.
      According to your description, the two 12V batteries are the load.
      And you have mentioned that the same batteries are charged by an alternator on the boat engine and by a similar DC voltage input from a solar panel controller.
      The DC supply should be the alternator on the boat engine or DC voltage input from a solar panel controller.
      But we are not sure which one you used to charge for the two 12V batteries.
      And is it the output of the alternator DC voltage?
      If not, the alternator on the boat engine is a not suitable power supply for this application.
      Hope this can help you.
      Best regards

      • Chris W December 19, 2016 at 12:02 pm - Reply

        Thank you for your help. I suspect the solar power is available only when it is light, and the power from the alternator is only available when the engine is running. I will need to power the meter from the batteries. Do you suggest I connect the load terminals directly across the batteries, and find a (regulated?) 12v supply from elsewhere?

        • Drok December 20, 2016 at 2:37 am - Reply

          Hello Chris W,
          We are not sure which kink of test you are going to do on your 12V batteries, so we cannot ensure the wiring.
          If it is for charging testing, the batteries are the load and the power supply should be the power supply which is used to charge for the battery.
          If it is for discharging testing, the batteries are the power supply and the load is the electric device which is used to discharge the battery.
          The working Voltage is 6.5 ~ 100VDC, please use within this range.
          Hope this can help you.
          Best regards

          • Chris W December 20, 2016 at 9:31 am

            i would like to monitor the state of charge of the batteries, primarily their voltage. I would like to read the meter when there is no charging (after dark, no engine). It would be useful to display the current from the solar cell too when there is daylight. Both the charging inputs from the alternator and solar cell are connected directly to the battery terminals. I would expect them to be at the same voltage as the batteries when there is no charging from either source. If I were to connect the load and DC inputs to the same pair of terminals – the meter should be powered all the time (by the batteries). When there is no charging, the voltage will be that if the batteries alone. When there is charging, the voltage would be that applied by the charging source (alternator or solar cell). Is this correct? The DC voltage will always be <20v DC.

          • Drok December 21, 2016 at 2:13 am

            Hello Chris W,
            If for charging test,the batteries should be the load and the power supply which is used for charging for the batteries should be connected to the power supply terminals.
            Do you mean the solar cell and the alternator are the power supply for the batteries?
            Could you please send some images of your wiring, i.e how the solar cell and the alternator charge to the battery so we can ensure where the meter should be installed?
            Best regards

  31. Wolfgang December 28, 2016 at 2:08 pm - Reply

    Hello,
    I just bought this meter:

    DROK Digital Multimeter DC 6.5-100V 20A Voltage Amperage Power Energy Meter DC Volt Amp Tester Gauge Monitor LCD Digital Display with Blue Backlight Measuring Volts Current with Built-in Shunt

    I connected it as you recommended to a 12V source and a 11 Ohms Resistor as load and it worked only partially. The current should be (and is) about 1A but the reading is 0.35A. Voltage is correct and power is also correct calculated.

    What could be wrong?

    I pressed the button a long time to adjust voltage alarms and got a display “curr 50/100”. Why not 20?
    Can I set the meter to factory settings?

    • Drok December 29, 2016 at 1:17 am - Reply

      Hello Wolfgang,
      Thank you for writing in and sorry for the inconvenience caused on you.
      Could you please tell us your order ID so we can ensure the product you have purchased?
      If you can, we sincerely hope that you can send us some images or video to let us check the problem details.
      With your help, we can find a solution more quickly.
      Look forward to hearing from you.
      Best regards

      • Wolfgang December 29, 2016 at 7:01 am - Reply

        How can I send images?
        I don’t have any Numbers or order ID. I got the meter from Amazon as a gift from my daughter.

        The problem is very simple.
        At a real current of about 1A the meter shows 0.35A. What is wrong?

        As I wrote earlier, with a long pressure on the button I came in the current menue with a choice of 50 / 100 A but no 20A.
        But the reading is always 0.35A.
        I don’t know if the meter was correct before that.

        • Drok December 30, 2016 at 1:37 am - Reply

          Hello Wolfgang,
          Thank you for your reply.
          You can send the images to us via email (service at droking dot com ).
          There is a FNSKU which is marked on the label attached on the package, the following image is the sample label:
          sample label
          Could you please ask your daughter for the order ID so we can ensure the product.
          And for the choice of the measuring range of the meter, it is better that the measuring range of the meter is twice the real measuring range of the application, which the result will be more accurate.
          Hope you can understand and look forward to hearing from you.
          Best regards

          • Wolfgang December 31, 2016 at 8:04 am

            Hi,
            I sent you an email with some photos.
            Hope, you can help.

          • Drok January 2, 2017 at 1:59 am

            Hello Wolfgang,
            Thank you for your cooperation.
            We will check it and find a solution to you ASAP.
            Best regards

  32. Niranjana Sundaresan January 17, 2017 at 6:36 pm - Reply

    Hi,

    I want to measure power using the power multifunctional meter in the range of microwatts. Which of the Drok devices to you recommend? This is for Energy-Harvesting Applications and hence we require high resolution.

    Thanks

    • Drok January 19, 2017 at 8:35 am - Reply

      Dear friend,
      Thank you for your writing in and your interest on our product.
      but we feel sorry that we don’t have meter in the range of microwatts.
      Hope you could understand.
      Have a nice day,
      Best regards

  33. Andrew February 9, 2017 at 9:52 pm - Reply

    I bought a 200141_EU DROK® Digital Multimeter DC 6.5-100V 100A Voltage Amperage Power Energy Meter DC Volt Amp Testing Gauge Monitor LCD Blue Backlight Digital Display with 100A/75mV External Shunt. After connecting to a 12V 120AH leisure batter in my camper van, the voltage seems to be correct, and the ammeter appears to show correctly for small current drain (for example when I have LED lights switched on). However, when a slightly larger load is applied, the device keeps restarting. The display shows all the digits and flashes repeatedly. When the larger load is removed, the unit works again. It seems that it has problems when a certain amount of load is placed on it.

    For information, the problem happens when I plug in a 12v DC to 8.5v DC power adapter. The adapter is rated at 6A input at 12v, with an output of 5.65A at 8.5v. I’ve seen the unit display current values up to 5A without issue, but larger loads seem to cause a problem. The 200141_EU is rated at 100A so I’m not sure what the problem is. Could you please help.

    • Andrew February 9, 2017 at 9:57 pm - Reply

      For clarity, the Amazon item was B017NG8IMA

      • Andrew February 21, 2017 at 7:09 pm - Reply

        Ok, well, thanks for the help then.

        >:(

  34. Karl Heinz Ferfers February 13, 2017 at 2:19 pm - Reply

    Hallo zusammen,

    ich benötige AC 0-40 Volt und 0-30 Amp. ist das möglich wenn dann 6 St.

    Danke im Voraus

    Karl-Heinz Ferfers

    • Drok February 14, 2017 at 7:46 am - Reply

      Hallo Karl Heinz Ferfers
      Danke fürs Schreiben.
      Wir haben die gewünschten Parameter realisiert.
      Könnten Sie bitte erklären uns, welche Art des Einzelteils, das Sie benötigen?
      Freundliche Grüße.

      Hello Karl Heinz Ferfers
      Thanks for writing in.
      We have realized the parameters you want.
      Could you please tell us what kind of item you need?
      Best regards.

  35. spencer April 8, 2017 at 9:04 pm - Reply

    Hi,

    im using a B017FSED9I

    but after 2 days reads voltage incorrect ?? 14V shows 22V what could have
    happened , is there a way to adjust.

    regards

    spencer

    • Drok April 9, 2017 at 7:56 am - Reply

      Hello spencer,
      Thank you for writing in.
      We are sorry to hear that.
      To find out problem origin, could you please let us know more details about your operation?
      For example, the power supply, the load and ohter parameters etc.
      If you can, we hope you can offer some pictures to show the connection.
      You can send picture to our service email: service#droking dot com ( please replace # with @)
      Please don’t worry, we will try our best to find solution for you.
      Best regards

  36. Manu April 13, 2017 at 8:26 am - Reply

    Hello,
    – Can you send a manual for the DROK® Small Digital Multimeter AC80-260V 20A (B015MTGZ4S on US Amazon) ?
    – What is the minimum power (in W) to be detected by this product ?
    thank you.

  37. Lido Bartalesi April 13, 2017 at 11:40 am - Reply

    Hi, I bought this your product: https://www.amazon.it/gp/product/B018HOCVJS/ref=od_aui_detailpages00?ie=UTF8&psc=1
    Male instructions where can I find them?
    Thank you
    Lido

    • Drok April 18, 2017 at 8:20 am - Reply

      Hello Lido Bartalesi,
      We are sorry for the delay.
      Here is an simple instruction for your reference200140
      Hope it can help you.
      Best regards.

      • Lido Bartalesi April 18, 2017 at 10:41 am - Reply

        Thanks for the instructions.
        I purchased your appliance by being able to measure the charging of a solar panel on a motor home but I can not make it work. Can you help me?
        Thank you
        Greetings
        Lido

        • Drok April 19, 2017 at 10:13 am - Reply

          Hello Lido Bartalesi,
          Thanks for reply.
          Would you please let us know what the detail problem?
          For example, the input voltage/current, wiring, and oter parameters etc.
          Best regards,
          DROK

  38. Lido Bartalesi April 19, 2017 at 10:54 am - Reply

    Hi, thanks for your interessamanto.
    I should measure how many amps out of the photovoltaic panel and enter the battery to be charged.
    If you tell me how do I attach the schematic of my electrical system.
    Thanks again
    Greetings
    Lido

  39. Bret April 19, 2017 at 2:23 pm - Reply

    Do you happen to have the digital version of the manual for the B017BCXQO6 available to download? I’ve looked all over the site and can’t find it. I lost mine and it would be quite helpful in remembering the options for configuring, clearing and setting values on the display.

    • Drok April 21, 2017 at 7:52 am - Reply

      Hello Bret,
      Thanks for writing in.
      Does this PDF attachement can help wiht you?
      200140
      Best regards.

  40. Jürgen May 25, 2017 at 8:17 am - Reply

    Hello,

    i have 2 pice of the Drok 0-100A DC6.5-100V version and it works fine. After 2 months it shows instead of 18V 27V. This happends on both meters. How i can solve this problem?
    Best regards

    Jürgen

    • Drok May 26, 2017 at 4:04 am - Reply

      Hello Jürgen,
      Thank you for writing in.
      Are you talking about item #200141?
      Would you please let us know more details about your operation?
      The more infromation you offer, we can find out problem quickly.
      For example, what do you use it for? power supply, other parameters.etc
      Is it convenient for you to take some pictures or video to show your operation?
      You can send them to service#droking dot com ( please replace # with @).
      We will try our best to find solution for you.
      Best regards.

  41. Duplessis June 20, 2017 at 4:10 pm - Reply

    Hello all !

    I’have just purcahsed a SKU 200139 panel meter on Amazone France.

    The meter looks fine, is very easy to read, and the blue back LED light is very nice. Maybe a french written translation could be offered for the French market, together with a detailed data shet?

    The device will be part of an electrical dispatching/control panel onboard a sailing boat, in order to measure the batteries voltage, (V), and the instant power used, (A, W & Wh).

    When connected according to your (very basic), electrical diagram, for a table test, I can read the Voltage, but not the current, (A) and naturally not the instant power (W), or energy (Wh), values.

    Can you please send to me a complete connection diagram in order to clarify the situation. (at least 2 other persons are facing the exact same problem for mobile home or motor yacht

    Best regards

    Bernard

    • Drok June 21, 2017 at 7:14 am - Reply

      Hello Duplessis,
      Thanks for writing in and your suggestion.
      Here is a wiring diagarm. If there are any problem on item. Please feel free to contact us.
      200139
      Best regards,
      DROK

  42. Simone July 3, 2017 at 10:57 am - Reply

    Hi, I bought your product KKmoon Ac80-260V and it work properly. Is it possible to add an external buzzer (i.e. Piezo Buzzer with build-in oscillating) when the alarm comes? Because screen flashing is not enough. Thanks

  43. John Bingham September 4, 2017 at 1:11 pm - Reply

    I have ordered a Drok B017NFJHTO from Amazon UK – DC Volt/Amp/Power meter 6.5- 100V 50A for use in my motorhome. I deduce that it can be connected to show either charge or discharge current depending upon which of battery and load is taken to be DC IN and Load.

    I propose to use a 2 pole changeover switch to select charge or discharge and may evolve this to automatically detect charge and discharge and change over with a relay.

    I would appreciate your comments.

    I’ll send details with some diagrams to your service email address.

    regards

    John

    • Drok September 6, 2017 at 1:08 am - Reply

      Hello John Bingham,
      Thanks for writing in.
      “DC IN” terminal is just for meter power supply, and the meter can only measur one direction of current.
      Therefore, we are sorry it may can’t work as your deduction.
      Best regard。

  44. Diego Gomez September 15, 2017 at 7:02 pm - Reply

    Hello All,

    Regarding the unit DROK® Digital Multimeter DC 6.5-100V 20A, could you please confirm if the terminal strip will accept wires 12AWG?

    Many thanks,
    Diego

  45. Drok September 18, 2017 at 9:38 am - Reply

    Hello Rob Reeves,
    Thanks for writing in.
    We are sorry there is no way to calibrate it. Can it work normally in the beginning?
    Have you tried to tested it on other application? You can send pictures to Service@droking.Com.
    We will try our best to find solution for you.
    Best regards.

  46. smik September 22, 2017 at 2:10 pm - Reply

    Hello,

    I purchased item #B014W3D1OC from Amazon.com.

    Would it be possible to post a diagram of how to wire with a 2 Phase 240v application (1 black wire and 1 red wire).

    Unless reply post to MacBadger (at August 11, 2016 at 6:31 am) above can be used?

    Also, what is the thickest gauge wire that can be used for this unit?

    Thanks

    • Drok September 24, 2017 at 9:28 am - Reply

      Hello smik,
      The wiring in last post(by MacBadger) is universal. Actually it is the same to the wiring diagram labeld on the back of meter.
      We don’t limit the gauge of wire that trough the CT transformer. Regarding to the wire between meter and power supply, please use thin wire.
      Best regards.

  47. Frederick Neil Simms November 7, 2017 at 1:36 pm - Reply

    I have a 240v 20 amp outlet, with 6-20R receptacle. This is wired with two hot wires and a ground (no neutral wire). I would like to monitor current and KWh while charging my EV. Can the “LCD 4 in one meter” (B014W3D1OC) be used to do this? How would it be wired? Will it show full KWh, since the CT will only enclose one of the two hot wires?

    • Drok November 8, 2017 at 4:03 am - Reply

      Hello Frederick Neil Simms,
      Thanks for writing in.
      Yes, this CT can only have one hot wire passed throught. So you may need two meters for measuring.
      Best regards.

  48. Kevin Myers December 6, 2017 at 1:45 am - Reply

    I’m looking for a meter that will tell me when and how long power is down. I’m looking to monitor a vacation house for indications as to know when to look for possible food spoilage in the refrigerators. Will one of your meters work.

    • Drok December 6, 2017 at 7:44 am - Reply

      Hello Kevin Myers,
      Thanks for writing in.
      It’s regrett we don’t have such meter now.
      For any more questions, please let us know.
      Best regards.

  49. Luis Camacho January 16, 2018 at 1:02 am - Reply

    I have de DC power meter 50A. When I finished the connection the voltage display is wrong. I have probed in the screws and it has 25V but the display show 40V How can reset everything to Zero including the voltage?

    • Drok January 16, 2018 at 8:31 am - Reply

      Hello Luis Camacho,
      Thanks for writign in.
      We can’t confirm the meter you mean. Could you please let us know send us product link or ASIN number for confirmation?
      Best regards.

        • Drok January 18, 2018 at 10:11 am - Reply

          Hello Luis Camacho,
          Please try the following calibration.
          1. Turn off the power supply.
          2. Connecting power supply (20V/10A), shunt and load.
          3. Connecting the two calibrating spots (Open the back cover, then you will find two holes which
          marked by “W” on the edge of board)
          4. Turn on the power supply.
          5. When the screen display changed from “CAL—“ into” —PASS”, that means the calibration is finished.
          Best regards.

      • Luis Camacho January 17, 2018 at 12:21 am - Reply

        DROK
        4.5 out of 5 stars 263 Reviews
        DROK Small Digital Multimeter DC 6.5-100V 50A Voltage Amperage Power Energy Meter DC Volt Amp Tester Watt Meter Gauge Monitor LCD Digital Display

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