The 3-channel embedded multifunctional actuator is a module that integrates multiple relay output functions, including switch output, curtain AC output, fan output or valve output, in addition to dry contact input and LED output indication functions. The corresponding output function can be configured according to actual application requirements. This module is compact and small in design, embedded installation, and can be installed in the bottom box of European standard and national standard. The output terminal adopts screw terminal to realize electrical connection. The bus connection is directly connected through KNX terminal block. The system power supply does not require additional bus except the bus Power supply voltage.