The LinkPRO has all the features of the LinkLITE, but measures amps up to 9999 (depending on the shunt used) and amp-hours up to 9999. The LinkPRO also includes a time remaining display, battery temperature sensor input, additional programmable alarm relay functions, communication/expansion port, and storage of a wide range of historical event data in internal memory. The LinkPRO Communications Kit includes an isolated meter to RS-232 interface box and interface cable. The LinkPRO Battery Monitor replaces and expands the features of the XBM Battery Monitor. For use on 12- and 24-volt systems. 500A/50mV shunt is included. 1-year warranty..