100% brand new and high quality Features: 1 working voltage: DC 6.5-30v (9V 12V, 24V) 2 working current: 5mA for all channels and 57ma for all channels 3 open, close, inching, self-locking, interlock, delay six working modes 4 MODBUS command Maximum delay of 255 seconds under 5 MODBUS command In addition to the serial super terminal input, MODBUS poll can also be used to input MODBUS command 7 MODBUS command mode, can support up to 64 devices in parallel 8. The default baud rate is 9600bps. You can modify the baud rate 1200 24004800 19200bps by instruction 9 weight: 65g (circuit board); 144g (box with guide rail) Maximum load: the maximum load current of each channel is 300mA Specifications: Color: Green Width: suitable for circuit board width um72 (inside 72) Insulation grade: flame retardant VO grade Board length: suitable for 10 cm PCB Net weight: 72g Installation method: dim35 and C45 guide rail size: 100 * 72 * 20MM (circuit board); 120 * 88 * 42mm (with guide rail box) Quantity:1 pc Note: No retail package. Transition: 1cm=10mm=0.39inch. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Relay Board(other accessories demo in the picture is not included.)