Working voltage: DC24V (24V version) Working current: standby 13MA, 1 relay conduction 41MA, 2 relay conduction 69MA, 3 relay conduction 95MA, 4 relay conduction 121MA, 5 relay conduction 149MA, 6 relay conduction 175MA, 7 Two relays conduct 199MA, 8 relays conduct 225MA 8 photoelectrically isolated input ports (NPN is active at low level). The input/output relationship can be set to associated (default) and non-associated through commands. Open, close, jog, self-lock, interlock, and delay six working modes MODBUS instruction support 03 06 16 function code The maximum delay under MODBUS instruction is 255 seconds AT commands can be input by serial port super terminal (serial assistant); MODBUS commands can be input by "Modbus Poll" besides serial port super terminal input In MODBUS mode, up to 64 devices can be used in parallel The default baud rate is 9600BPS, you can select the baud rate 2400 4800 19200 through the jumper Maximum load: 10A/250VAC, 10A/125VAC, 10A/30VDC, 10A/28VDC, 10A/12VDC DIN rail box parameters: Product model: UM72 Width: suitable for circuit board width UM72 (72 cm) Insulation grade: flame retardant VO grade Base plate length: suitable for 136 cm circuit board Installation : DIM35 and C45 rail Colour: green Material: abs Size: 140x88x42mm Package Contents: 3 x 8 input 8 output DIN rail RS485 controller module 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.