Ytian 4pcs DC Digital Voltmeter 0.28 Inch Three-Line DC 0-100V Mini Digital Voltmeter Gauge Tester LED Display Reverse Polarity Protection and Accurate Pressure Measurement 4Colours

these look good, as described, checked and had to adjust 2 of them as they were slightly out on there reading.Used one for a diode tester to read the voltage drop across them.Plus checking they are not shorted.

Quick efficient, well packaged delivery. However one unit dead on arrival another had a disconnected solder joint on the ground line but once re-soldered it functioned as advertised, I would only give 2 stars for quality and the lack of any detailed data sheet is not helpful especially when switching 3 to 2 line and using voltage/resistor trimmer. I also would have severe doubts about using these units for anything above 12Volts

EASY TO USE. COMPACT. THE RED ONE DON'T WORK.

Avoid, they are not quality controlled. None worked. Pity, they were exactly the size and functionality I wanted. Have to source elsewhere and check they are functional before parting with money. Qualified electronics engineer so know what I am doing. No stars but you have to select one minimum.

Nice bright display and good for the price

1 out off 4 worked, the blue one what a waste of £Should have read the reviews sooner rather than later