Front viewA Reset buttonA brief press of the button will reset the device.Holding the reset button pressed in for approximately10 seconds will reset the device and restore the factorydefault settings when the button is released.B EXT.USB interface solely for flash memory sticks (not supplied)C Green and red LEDsfor device status displayD Green LEDs (1...4)I/O status displayE I/O 1&2 (6 pin screw terminal block plug)Pin Description1 Output Relay 12 Common Relay 1&23 Output Relay 24 Input 15 Ground (-) Input 1&26 Input 2F I/O 3&4 (6 pin screw terminal block plug)Pin Description1 Output Relay 32 Common Relay 3&43 Output Relay 44 Input 35 Ground (-) Input 3&46 Input 4K RS-485 bus (4 pin screw terminal block plug)Pin Description1 485 B2 Reference *3 485 A4 Shield*The reference pinis connected via 100 Ohm to the internalground.Rear viewG Analog audio In & Out (DSub 9 pin female)Pin Description1 Left Out+ [Hot]2 Left Out- [Cold]3 Ground [G]4 Right In+ [Hot]5 Right In- [Cold]6 Right Out+ [Hot]7 Right Out- [Cold]8 Left In+ [Hot]9 Left In- [Cold]H RS-232 serial port (DSub 9 pin male)Pin Description1,6,9 Not connected2 Receive Data [RxD]3 Transmit Data [TxD]4 V+ 14.6V, 100mA max5 Ground [GND]7 Ready to Send [RTS]8 Clear to Send [CTS]I LAN port 10/100 (RJ45 Ethernet socket)Pin Description1 Tx +2 Tx -3 Rx +4,5,7,8 Not connected6 Rx -J LAN status LEDsGreen LED for Link, yellow LED for ActivityL Power (8 Watt max.)Pin Description1 Vin -2 Vin+ 24..48VDC ±20%DBA C F HG IEK LJ