Smart Controller are used to manage and control devices such as: A: Bluetooth timer switch The Bluetooth timer switch device can be timed and controlled through the APP. This product has automatic timing function, power-off memory function, fire and flame retardant function, multiple sets of intelligent time settings, can be backed up and batch timed for cyclic use. B: Bluetooth dimmer Dimming operation can be performed on Bluetooth dimmer devices through the app. The brightness of the device c