The TPDIN-1256GD-BT is a high power DCDC converter and up to 5Gbps PoE injector with a wide voltage input range (11-60VDC), a wide operating temperature range (-40 to +70C) and a high power 802.3bt 90W output. The unit has dual DC inputs for primary and backup power sources. The input to output is isolated so the unit can accept -48VDC Input, making it compatible with legacy telecom systems. The green DC connector is a locking type that accepts wires up to 12AWG. The “FG” input is used to provide chassis or earth ground. The device is fan-less and uses natural air flow for cooling. It mounts to a standard DIN Rail commonly used in industrial installations.