Use this high-precision smart battery monitor to keep an eye on your power usage and battery status, and to prevent unexpected total battery discharge. From the backlit display or Bluetooth enabled Smartphone, tablet or computer, see comprehensive real-time data including voltages, Ampere hours or current being consumed, state of charge, and time to go before the battery needs charging. Historical data can also be accessed on-screen or via the App to evaluate usage patterns and battery health. Other features include second (auxiliary) battery monitoring, midpoint voltage function, as well as a range of alarm, buzzer and bi-stable relay outputs when pre-set thresholds are met. The round panel is designed to mount flush, and a square bezel is included if you prefer it has a square appearance. Supplied with 500A/50mV current shunt with quick-connect PCB, square bezel, fused power cable, and a 10m 6-core UTP connecting lead. Not intended for outdoor use. Compatible with other Bluetooth enabled Victron Energy products LED-backlit LCD screen Built-in Bluetooth Supply Voltage: 6.5-70VDC Battery Voltage: 6.5 - 70VDC Battery Capacity: 1 - 9999Ah Resolution: Current: +- 0.01A Voltage: +- 0.01V Amp Hours: +/- 0.01Ah SoC: +/- 0.1% Accuracy: Current: +- 0.4% Voltage: +- 0.3% Protection: IP55 Shunt Terminals: M10