8 way 10A relay controller, with normally open and normally closed output. 8 way switch input. Can be used for intelligent home control, can be used for the two development of mobile phone or computer remote control electric lights, motors, and other electrical equipment. Can also be used for the detection of power outages in the room, can be connected to the human body infrared sensor, can be connected to the button switch, can be connected with smoke alarm output. Provide C++ source code. Reliable network connection, network disconnection can automatically reconnect.