Specification: Origin: Mainland China 1: DC 12V (12V version), DC 24V (24V version) 2: Standby current (all relays are closed) 13MA, 1 relay is open 41MA, 2 relay is open 69MA, 3 relay is open 95MA, 4 relay is open 122MA, 5 relay is open 149MA, 6 relay is open 174MA, 7 relay is open 198MA, 8 relay is open relay 225MA 3: 8 photoelectrically isolated input ports (NPN low-level active), the input-output relationship can be set to associated (default) or unassociated through commands. 4: 6 commands of "open", "open", "instantaneous", "self-locking", "interlocking" and "delay" 5: MODBUS RTU command, supports 03 06 16 function code 6: Under the "Delay" command, the maximum delay is 255 seconds; 8: In MODBUS command mode, up to 64 devices can be supported in parallel. 9: The default baud rate is 9600BPS. Baud rate can be selected by jumper: 2400 4800 9600 19200BPS 10: Overall dimensions: 136*72*20mm (PCB board only); 140*88*42mm (including DIN rail box) 11: Weight: 134g (PCB board only); 223g ( 12 Maximum load: 10A/250VAC, 10A/125VAC, 10A/30VDC, 10A/28VDC, 10A/12VDC Product model: UM72 Color: green Width: Applicable PCB board width UM72 (72mm) Insulation level: flame retardant VO level Backplane length: suitable for 136mm PCB board Net weight: 99 grams Installation method: DIN35 and C45 rail application: PLC IO expansion board PTZ CCTV camera Security Monitoring recognition system; Motor positive and negative directions Automatic curtain control Product size: 139.00x81.00x42.00mm Product size: 5.47x3.19x1.65inch Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 1 x UART RS485 Relay Module