Blue Sea Systems 1830 M2 OLED DC SOC Meter

.Accurately measure and monitor the state-of-charge of your batteries. Up to 3 voltages, 1 current, and battery capacity available on a single screen. Programmable battery names, alarms, and external relay control. No Fasteners required, Flat or Surface Mount.
.Accurately measures and monitors State-of-Charge of 1 bank.
.Measures 3 voltages and 1 current. Includes One 500A Shunt
.Adjustable internal 92dB alarm for High Current, High/Low Voltage, Low Battery
.Auto-dimming, bright OLED display is daylight readable, and IP-66 Waterproof
.Input Voltage: 7-70V DC, Function Voltage: 8-70V DC, Supports Shunts up to 5000A DC