0-30 V Red Panel Voltmeter

Great for breadboard projects

I have used them on breadboard projects to monitor voltage during project operation. They work as described.

It works and continues to work

Been using this to monitor my marine battery radio power supply. Works great.

They work well and easy to wire

I have a prototype with a voltage regulator that uses a trimpot to adjust the voltage and because the board controls a mechanical device that vibrates, I needed to make sure that the trimpot is not changing its value overtime after multiple vibration cycles. These came very handy because all I needed to do was solder the black cable to ground and the white and red on +5V. The price is right and they are very accurate (+ - 0.01V) right out of the box when compared to readings of known calibrated digital multimeters. Yet, having the ability to calibrate them is a plus.

Great little voltmeter for your small projects!!!

They came right on time.They work exactly as specified. They were smaller than I thought they would be but that works out better for me. I can think of several low voltage applications for them. I've already printed a few housings and have installed them and am very happy with what I have. Make sure to read the description so you understand exactly what you are getting. Thanks for a great product!!!!!

Good product

These work as they should. The display is nice and bright.

It's a Voltmeter it's the size of a quarter

I love that I can use these anywhere. It's an accurate voltmeter the size of a quarter that needs only the battery that you're testing. Why aren't all voltmeters like this?

Worked great for the price

Easy to wire and a nice readout for the price point. I cut a hole and glued it into a pvc cover to read the 0v to 10v output of a motor frequency drive. I gave 4 stars under accuracy, because I could not calibrate it as close as I wanted to, using the back reostat. I was able to adjust the drive output to get an accurate readout. So.......Overall happy with it. Time will tell, how long it will last.

Just what I needed

Super fast shipping, and product works perfectly. It takes a couple minutes to set the potentiometer on the right position and you must have a voltmeter/tester handy to make sure that the mini voltmeters are properly calibrated, but once you put the pot in the right position they work perfectly

Five stars

Nice package for keeping up with battery voltage, works great, nice and bright.

Accurate

I've hooked it up to read near-zero to just over 5 volts, and all five read the same as each other. That tells me they're pretty good! Very bright (adjustable) and fast-responding. I've bought several sets of these.