SG230 Battery Monitor Kit N2K BT Gateway Color Display 12-48VDCN2K 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 Large, bright, color display Expandable architecture Includes Display Shunt Gateway This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.