1: Working Voltage DC 12V; 2: Standby current (all relays closed) 5MA, 1 relay ON 49MA, ...,ALL relay ON 1500MA 3: "ON" "OFF" "Momentary" "Self-locking" "Interlock" "Delay" "Open all" "Close all"8 Commands 4: MODBUS RTU , Write 05/06/15/16, Read 01/03 5: Under the "Delay" ,the maximum delay is 255 seconds;<br><br>6 MODBUS commands can be made serial HyperTerminal (serial assistant) OR "Modbus Poll" Enter; 7 Set the Slave ID through the DIP Switch: 1-63 ID 8 Set BaudRate via DIP switch : 9600/19200/38400/115200BPS 9 Parity :None(Default)/Even/Odd 10 Size : 224X90X16MM(Only Board);228X106X36MM(With DIN Box); 11 Weight : 330g(Only Board),447g(With DIN Box) 12 Maximum load: 7A 120VAC;10A 28VDC Application PLC IO Expansion Board HMI Configuration Software Smart Home,Home Automation ,Automated industry; PTZ CCTV Camera Security Monitoring Identification system; Automatic curtain control LED Control Colour:green Material:abs<br><br>Package Contents: 1 x Relay module<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.