DC 3-40V Voltmeter 0.28 inch Source-Powered Digital Voltmeter DC

The 0.28' 2 wired voltmeter is a small, compact digital voltmeter with a display screen measuring 0.28 inches across, that only requires two wires to connect to the circuit to measure the voltage; essentially, it's a tiny device used to read DC voltage by simply connecting its two wires to the points in a circuit you want to monitor, with the reading displayed on the small LED screen.