Voltmeter DC 3.5V-30V - Blue, 0.56 inch, Flush-mounted (OT3541)

Small and compact digital voltmeter with a blue LED display, 3.5 - 30V DC, 2 wires. Requires only a few minutes of setup and is as simple as connecting wires directly to the source you wish to measure and watching the LED flash.
Front size: 4.75cm x 2.85cm
Display size: 4.5cm x 2.5cm