Blue Sea M2 OLED Digital Meter, DC Voltmeter

M2 DC Voltmeter, monitors the voltage of up to four batterybanksAuto-dimming, bright organic LED display is easy to read; 80dB alarm on all models; Isolated 500mA MOSFET relay; Includes external DC shunt or AC current transformer when required; Display Size: 55mm x 28mm; Power Supply Voltage: 7-70V DC; Range (Power Consumption): 0.3W – 1.0W Variable with voltage, display intensity,and sleep mode