A connector includes: a data processing module; a wireless communication module; a home appliance interface adapted to be connected with an interface of a home appliance; and a sensor interface adapted to be connected with an external sensor. Wireless radio frequency (RF) communication signal generated by the connector is not shielded by metal shell of the home appliance, improving the transmission performance of the wireless RF communication signal, and it is convenient for users to replace the connector independently, reducing the costs of maintaining and updating the connector. Furthermore, the connector is provided with a sensor interface adapted to be connected with an additional sensor on a control circuit board.