Xantrex LinkPRO Battery Monitor One Size. It selectively displays voltage charge and discharge current consumed amp hours remaining battery capacity and the time remaining of your battery bank. It is equipped with an internal programmable alarm relay to run a generator when needed or to turn off devices when the battery voltage exceeds programmable boundaries. The LinkPRO Battery Monitor is the direct replacement of XBM Battery Monitor with expanded features. Features/Specifications: Read your battery bank like a fuel gauge Provides critical information about the status of your battery bank Displays voltage current consumed amp hours and remaining battery capacity Secondary battery bank voltage monitoring Auto sensing battery voltage inputs Specifications for Xantrex Link Pro Battery Monitor: Manufacturer: Xantrex Color: Black Features of Xantrex Link Pro Battery Monitor: Link lite Battery monitor Displays time remaining Communication/expansion port Stores a wide range of history events in internal memory Advanced programmable alarm Relay Included Accessories: LinkLite Battery Monitor;500 Amp shunt;Installation hardware;owner's manual Documentation Package Contents: Xantrex Link Pro Battery Monitor Xantrex 84-2031-00: LinkPRO Battery Monitor One Size