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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 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℃
  • Operating Humidity: 10 to 80% (non-condensing)
  • Applications:Suitable for automotive/electric cars/motorcycles battery monitoring or other products voltage current measurement

Instruction: Please check your Amazon email after receiving order.

  • The voltage between the thin red and thin black lines must be within DC 4.5-30V
  • The ammeter can only be connected to the negative of the device under test
  • 10A below ammeter (include 10A), built-in shunt, does not require external shunt
  • When the black thin line vacant, it is better to use insulating tape around the exposed part of the wire, to prevent short circuits
  • If just be used as a voltmeter, it is recommended that the yellow line and the black line were connected together, to prevent the ammeter digital
  • flashing

Package include:

  • 1x Digital Volt Ampere Meter

Product information

    Additional Information

  • ASIN: B06XR2XKNT
  • Customer Reviews: 4.2 out of 5 stars 445Reviews
  • Best Sellers Rank:
    #145,979 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement)
    #137 in Voltage Testers
  • Date First Available: March 19, 2017
Product Warranty: For warranty information about this product, please click here
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Customer Questions

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Q: There are two connectors, one is 2-pin and the other is 3-pin, what are the pinouts for th…

A: I googled "dsn-vc288" (as per A. L.''s review) and for scenarios where the meter is powered…

Long | 4 years ago

Q: What size cut-out does this fit? (Is there a mechanical drawing somewhere?)

A: There is no mechanical drawing. However, it is merely a rectangular cutout of the followin…

eleneasy | 3 years ago

Q: The ammeter reads approlx 3X too high and the calibarton control does not have enought ran…

A: That was my experience as well. I ''calibrated'' it to be about 2x too high, and just keep t…

jdjager | 3 years ago

Q: does this measure amp hours or just amps?

A: amp hours is a measure of capacity amps are a component of capacity. E=IR or I=E/R as ohm…

bill w | 2 years ago

Customer reviews

4.2 out of 54.2 out of 5
445 global ratings

Reviews with images

Top reviews from the United States

Workshop Nation
1.0 out of 5 starsVerified Purchase
Item not as shown in listing
Reviewed in the United States on October 5, 2019
The wiring of the unit I received is not the same as what is featured in the listing. I ordered this model because it was advertised as the version with three thick wires for measurement and two for powering the unit. Instead I received a model that has two thick wires and... See more
The wiring of the unit I received is not the same as what is featured in the listing. I ordered this model because it was advertised as the version with three thick wires for measurement and two for powering the unit. Instead I received a model that has two thick wires and three thin wires. The pictures in the listing clearly suggest that it shows volts with two decimal points (i.e., shows hundredths of a volt), but that is not the case. Additionally, the refresh rate on the display is very slow. If you are adjusting voltage, you have to adjust, then wait a few seconds for it to settle, then adjust again.

It is not even worth the cheap price they are sold at. Don''t waste your money.
17 people found this helpful
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cg49me
4.0 out of 5 starsVerified Purchase
Don''t use the small black wire!!
Reviewed in the United States on June 19, 2020
There''s a non-intuitive trick to get an accurate current measurement out of this thing - don''t use the small black wire. The size and grouping of the wires led me (and I suspect many others) to believe that the small red wire was for general power to the meter,... See more
There''s a non-intuitive trick to get an accurate current measurement out of this thing - don''t use the small black wire.

The size and grouping of the wires led me (and I suspect many others) to believe that the small red wire was for general power to the meter, the small yellow wire was the positive voltage probe point, the small black wire was the negative voltage probe point, and the large red and black wires were for in-line current measurement. Well, we''re all correct about the bigger wires, but if you also hook up the small black wire, you''ll end up with an erroneously high current measurement (by about 30%, even with the adjustment potentiometer cranked all the way "down"). Leave the small black wire floating, and you''ll be able to adjust the potentiometers to get an accurate reading (within the meter''s display accuracy - 0.1 V and 0.01 A). The voltage measurement will be made from the small yellow wire (positive) to the large black wire (negative). I ordered three of these, and they all have this same behavior.

Otherwise, really cool! Only knocked a star off because of non-existent documentation.
10 people found this helpful
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michael tolbert
1.0 out of 5 starsVerified Purchase
No instructions.
Reviewed in the United States on November 29, 2018
It came with 2 plugs with wires but no instructions as to what gets wired where. Up date. Finally bit the bullet and tried wiring it up. I connected the thick black wire to negative and the thick red wire to positive. As soon as i applied power (12v in my truck) it... See more
It came with 2 plugs with wires but no instructions as to what gets wired where.
Up date. Finally bit the bullet and tried wiring it up. I connected the thick black wire to negative and the thick red wire to positive. As soon as i applied power (12v in my truck) it made a loud pop and cought fire.
21 people found this helpful
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AGMezins
4.0 out of 5 starsVerified Purchase
Does what is supposed to, with limitations.
Reviewed in the United States on September 28, 2017
Like nearly everything from China, no instructions. You can google and find it online, but why? (Hear that Amazon? You need to get your suppliers to play nice, OK). The only way to get it to work on low-Voltage stuff is to use the separate power. The heavy wires are for... See more
Like nearly everything from China, no instructions. You can google and find it online, but why? (Hear that Amazon? You need to get your suppliers to play nice, OK). The only way to get it to work on low-Voltage stuff is to use the separate power. The heavy wires are for current monitoring. That big heavy half-loop of bare kinda copper wire (it''s not copper) is the current sense resistor. It''s a fairly low resistance, but the "trouble" is that it''s in the ground side and so it adds to the system''s ground noise, as pointed out by several YouTube reviews of this and/or similar meters. So I won''t be using this in the power supply I was building, since I want it to be low noise and accurate. But it''s crazy inexpensive.
13 people found this helpful
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D. Gross
4.0 out of 5 starsVerified Purchase
Wiring Instructions
Reviewed in the United States on May 24, 2019
The seller''s wiring instructions in the description are incorrect at the time of this review. Here is the correct way to wire: Thin Red - Meter power + (4.5 to 30 VDC) Thin Black - Meter power - Thin Yellow - Voltage Measure Thick Red and Black - Current... See more
The seller''s wiring instructions in the description are incorrect at the time of this review. Here is the correct way to wire:
Thin Red - Meter power + (4.5 to 30 VDC)
Thin Black - Meter power -
Thin Yellow - Voltage Measure
Thick Red and Black - Current Measure (in series with load)
*Current measure leads should be on the - side of the load for proper V measurement.

The meter seems to work well, refresh rate is a bit slow, and voltmeter resolution is only 0.1V, but for the price, can''t complain. Wire leads are only about 4 inches. Very nice looking display.
9 people found this helpful
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Robert A. Vine
1.0 out of 5 starsVerified Purchase
When used with one power source it does not read current...so what good is it?
Reviewed in the United States on July 8, 2020
Using the meter with two power sources it works as described. However, if you use it with one power source it does not read current/amperage. I was very disappointed. With two power sources it operates as described and it''s as you would expect for a small, relatively... See more
Using the meter with two power sources it works as described. However, if you use it with one power source it does not read current/amperage. I was very disappointed. With two power sources it operates as described and it''s as you would expect for a small, relatively inexpensive meter. The product description doesn''t note that this device will not be totally functional on only one power source. I believe that I was mislead on this meter. I am very disappointed in the write up and the performance of the panel meter. I do have a degree in electronics so I don''t believe I connected the meter wrong, although I could have, but I checked the diagram, for what it is, and I connected it according to the "youtube" video and diagram. What a rip off! It does not work as described!
2 people found this helpful
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Patrick Garon
5.0 out of 5 starsVerified Purchase
Works Well, easy to use
Reviewed in the United States on November 3, 2019
Product works well, the wire AWG that are included on the connectors seem appropriate for the voltage/amps that could be pushed though it. The one thing I will say is that if you are trying to use this in line with a step down buck converter, that it requires some... See more
Product works well, the wire AWG that are included on the connectors seem appropriate for the voltage/amps that could be pushed though it. The one thing I will say is that if you are trying to use this in line with a step down buck converter, that it requires some knowledge. The device seems to be accurate within spec but I dont rcomend this if you need 4 spaces rather than the 3 that this has, it is not made to monitor voltages/amps that low.
One person found this helpful
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Long
3.0 out of 5 starsVerified Purchase
Works ok, but inaccurate. Should have wiring diagram.
Reviewed in the United States on July 6, 2017
The product works okay-ish. It took me a while to figure out how to wire it. After googling it and some trial-and-error I was able to make it work using the attached single-source wiring diagram. However, the amperage display is way off. It''s showing 4.77 A,... See more
The product works okay-ish. It took me a while to figure out how to wire it. After googling it and some trial-and-error I was able to make it work using the attached single-source wiring diagram.

However, the amperage display is way off. It''s showing 4.77 A, while the actual measured current was about 1 A. I tried to adjust the potentiometers to no effect.
20 people found this helpful
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Top reviews from other countries

michael d.
2.0 out of 5 starsVerified Purchase
Not good enough
Reviewed in Australia on August 1, 2020
No wiring instructions
Report
See all reviews
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