With built-in 3.3~5V switching circuit
With protective IC and normally open / closed contact
Strong drive force with 4-CH 250V 10A
With LED indicator
Supports cascade connection
With built-in 3.3V stabivolt output
With bluetooth serial port and RF serial port to choose from to control PC or cellphone wirelessly


Instructions:
FF 01 00 01 EE: 1st channel close
FF 01 01 02 EE: 1st channel open
FF 01 02 03 EE: 1st channel 1s inching
FF 02 00 02 EE: 2st channel close
FF 02 01 03 EE: 2st channel open
FF 02 02 04 EE: 2st channel 1s inching
FF 03 00 03 EE: 3st channel close
FF 03 01 04 EE: 3st channel open
FF 03 02 05 EE: 3st channel 1s inching
FF 04 00 04 EE: 4st channel close
FF 04 01 05 EE: 4st channel open
FF 04 02 06 EE: 4st channel 1s inching
FF 25 00 25 EE: all close
FF 25 01 26 EE: all open