Review: 2-Wire LED Voltmeter takes 5v to 120v DC Supply Voltage. Just received this really neat LED voltmeter. It's 2-wire, so it measures it's own supply voltage, but that can be anywhere between 5v and 120 volts. And it was only £2.29 shipped. I think it's going to be a useful little thing.
Tags: Review: 2-Wire LED Voltmeter takes 5v to 120v DC Supply Voltage, LED voltmeter, 2-wire, volts, amps, ohms, seven segment