The APOE03GS is the Single-Port Gigabit ( 10/100/1000 Base-T) redundant PoE Midspan/Injector with Hi-Power sourge protection that provides DC power for PoE equipped Network Appliance device. It is compatible with devices that support the IEEE 802.3af/at standard PoE power feed using Mode B (Pins 4/5 and 7/8). The APOE03GS fetures surge protection for the data and power feeds for networks. The design utilizes three-pole differential Gas Tubes. The tubes feature ultra-low Line to Line and Line to Ground capacitance to minimize distortion of high-speed signals. The APOE03GS features terminal block for Power redundancy the power redundancy ensures that vital network capabilities are always available when needed and also makes life easier for any IT Administrator who just doesn't want to have his sleep or his weekend interrupted by an untimely service call caused by a finicky power supply. Function: Transform DC through RJ-45 cable PIN# 4 5 7 8 into remote devices such as Wireless AP IP Phone IP surveillance Camera etc. With the terminal block connector can be connected to the UPS allowing redundancy in the power source. Key FeaturesInput:1.1 Input Voltage: 5Vdc to 57Vdc Nominal = 48VdcGeneral Description:2.1 Operation Temperature: -0 ~ 402.2 Storage Temperature: -20 ~ 602.3 Operation Humidity: 10% ~ 80% Non-Condensing2.4 RJ-45 Connector PinOut2.5 DC Power Plug Diameter: 2.1Ø / 5.5Ø Length: 12 ± 0.5mm2.6 DC Power Plug Polarity: Inside (+) Outside (-)PIN Define　RJ-45 Input ( Data )　RJ-45 Output ( Data & Power )PINSymbolSymbol1TXRX A+TXRX A+2TXRX A-TXRX A-3TXRX B+TXRX B+4TXRX C+TXRX C+ DC+5TXRX C-TXRX C- DC+6TXRX B-TXRX B-7TXRX D+TXRX D+ DC-8TXRX D-TXRX D- DC-