SG235 Battery Monitor Kit N2K BT Gateway No 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 parametersSupports for all common battery chemistries and voltagesIntelligent, self-calibrating accuracyNo display includedExpandable architectureIncludes Bluetooth GatewayThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.