Ubiquiti TP-DCDC-1248G, DC Input Voltage 9VDC – 36VDC, DC Output Voltage 48V (Passive), EMC Standards FCC Class B EN55022 Class B, MTBF 166,000 Hours. The TP-DCDC-1248G offered by Tycon Power is a low cost and high efficiency solution for those requiring Passive Power over Ethernet from a 12VDC or 24VDC voltage source like a battery system or vehicle.