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DaFuRui DC Voltage Display: Mini Digital Voltmeter with Reverse Polarity Protection and Accurate Pressure Measurement Review

3

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Poor

Revainrating 2.5 out of 5  
Rating 
2.3
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Description of DaFuRui DC Voltage Display: Mini Digital Voltmeter with Reverse Polarity Protection and Accurate Pressure Measurement

★【Excellent Quality】Digital Voltmeter DC 0-100V 0.28 Inch Three-Wire Voltage Tester Meter,Install the hole: 23 * 10 mm. ★【Detecting Voltage】DC0-100V; Operating Voltage: 4.0-30V; Working Current: <20 mA; Detection Rate: ≥ 200 mS/Times;Accuracy: 3‰(+/- 1 word);Operating temperature: -10 ~ +65 °C. ★【Protection Design】Reverse Polarity Protection,The meter won't burn out if reverse polarity is applied, but the screen will display nothing. ★【Very High Precision】The precision automatic adjustment ,when less than 10V accurate to 0.01V, more than 10V accurate to 0.1V. ★【Can be calibrated】The screw on the back can be tuned to calibrat,Turn clockwise to lower voltage.

Reviews

Global ratings 3
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Type of review

Revainrating 3 out of 5

Good but weak wiring

Suitable for classroom demonstrations. However, the cable connections are very weak, and by the end of the lab most of them are weak. I had to ask some students to re-solder the connections.

Pros
  • Can be calibrated
Cons
  • There are new competitors

Revainrating 1 out of 5

Inaccurate. Segments

Only one tested so far. The battery has 12 V and the display shows 16.? Multiple segments on the last number, but only for certain numbers. I'll test the rest and continue from there

Pros
  • Protection design
Cons
  • Reliability

Revainrating 3 out of 5

Size and accuracy issues in low current circuits

I bought four of these kits to have enough voltmeters (plus spares) for a specific project - a pinball power driver test fixture that I designed and built. A house. My test rig uses 18 of these voltmeters to measure the control and output voltages for the 8 channels of the power driver, as well as the input and main supply voltages. I 3D printed the case/jig and used spring pins so I could just connect the power driver board, apply voltage and count volts on each channel. I was hoping that with

Pros
  • Voltage detection
Cons
  • Nothing