Yeelight Smart Dual Control Module - a module that you put under the traditional light switch and add smart features to your ordinary light. Up to two devices can be connected to the module (e.g. two lights controlled by a double switch). WiFi and Bluetooth connectivity. You can control the light either through the Yeelight app and the voice assistants Google Assistant and Amazon Alexa, or using Yeelight Bluetooth Remote Control. Scheduled On/Off feature.