In the Orion-Tr Isolated DC-DC Chargers the remote on/off circuit is referenced to the primary battery (e.g. starter battery). The Orion-Tr DC-DC Charger Isolated remote cable is intended for applications where the remote on/off signal is referenced to the secondary battery (e.g. lithium battery with BMS).
Specifications:
Maximum input voltage: 35 V
Maximum output voltage: 70 V
Minimum input voltage needed for pull down: approximately 4 V
Maximum pull down current: approximately 30 mA (short circuit
proof)