The BMV-712 Smart is a highly precise battery monitor. The main function of a battery monitor is to calculate the consumed ampere-hours and the state of charge of a battery. The consumed ampere-hours are calculated by integrating the current flowing in or out of the battery. For this, the battery monitor requires the Peukert value of the battery. A relay can be used to control a generator or other equipment. A VE.Direct interface allows for system integration or programming via computer or Bluetooth. The following information is available: state of charge, voltage, current, consumed ampere-hours, remaining time, power, and historical values from the past. Models: 6.5 - 95V. With VictronConnect, you can query live status information and configure all Victron products that either have a built-in Bluetooth function or are connected via a VE.Direct Bluetooth Smart Dongle.