This product is a phase - cut bridge box, can adjust ac output voltage value according to user's control, realize lamp output power adjustment. By connecting the dimming output interface with the dimming drive power supply, the LED brightness can be controlled in a linear manner, and the luminance and darkness of the lamp can be controlled.The device is used in conjunction with the gateway, and the brightness of the light can be controlled remotely through the APP client.The device is □exible and convenient to install without changing the original wiring pattern of the house. Only power cord, controller and LED light drive connection can be used to control the lighting brightness