PoE Ethernet I/O Module with 2-port Ethernet Switch and 8-channels Analog Outputs, Support for both Modbus TCP and Modbus UDP Protocols. Current and Voltage Output Types Include: +0 VDC ~ +5 VDC, +/-5 VDC, +0 VDC ~ +10 VDC, +/-10 VDC,+0 mA ~ +20 mA, +4 mA ~ +20 mA. Operating Temperatures of -25~ +75C.