bayite 3 wires DC 0~30V Digital Voltmeter Blue LED Display Panel Pack of 5

Good looking blue LED display with a very small footprint. Good accuracy from 0 to 30V running off of a 5V supply. These do not measure negative voltages.

They work accurately enough to give you a point of reference. Not expensive, so not top tier. Example: Vehicle is charging at 14.4v@idle as verified on multimeter at display connection, adjust pot to calibrate this display to match meter, then turn off car to see 12.4 on meter and 12.7 on this display.... As stated, ideally used as a point of reference (you are above or below your target range). The deviation will spread as the range gets wider, but it's perfect for a voltmeter in the dash or on an amp. Just a monitoring tool, not a diagnostic tool.

They all seem a accurate, and only had to adjust one of them by 0.1V based on the reading from my Fluke meter. Bright display, easy to read. Like the Three wire set up for reading voltage of same device or separate one. Dislikes... With the lack of a bezel you need a CNC machine to cut out a accurate hole to mount them and still look nice... See picture.... The wires come out the top of the board... See other picture... So when you mount it thru the plate. You need a couple washers to space it so it rests flat. If the wires were soldered to the other side of the board, this would not be an issue. Still would recommend

I disliked the false advertising and different product was shipped than what is advertised. It is missing the voltage calibration screw on the back.

Excellent product