VM 1

 3 Fanction, Adjustable Voltmeter  9-30 Volt  12volt Voltmeter mode with sag & swell indication and protectionInput voltage: ≦ 30V DC max    Remote out: 3A max      4, 2, 1 Hz        size: 74 x 53 x 24.5mm      Mounting : 67 x 46mm depth 21.5mm