Balmar SG235 Battery Monitor Kit N2K BT Gateway No Display 12-48VDCSG235 Battery Monitor Kit N2K BT Gateway No Display 12 48VDC N2k Version, connect to an existing N2k network to provide real time data on the network, including: Voltage, SoC, SoH, Time Remaining, and Current. Incluses N2k Adapter cable. Features: Learns and displays all critical battery parameters Supports for all common battery chemistries and voltages Intelligent, self calibrating accuracy No display included Expandable architecture Includes