Complete security and automation of your home Set of control unit and 5 peripherals Household sensors, Innovative driver Convenient control via mobile application Total Weight: Approx.400g / 16.5oz Movement sensor: Small, portable device that detects the movement of people and pets. As with other sensors, it is possible to set different actions when connected to the control unit when the sensor is activated. Wireless Switch: Another way to conveniently control a smart home.Simply pair the controller with the application, set the desired action (e.g, trigger the alarm) and then simply control it with a simple touch of your finger. 3 simple step installation, easy to use. Package Contains: Mi Control Hub x 1, Mi Motion Sensor x 2, Mi Window and Door Sesnor x 2, Mi Wireless Switch x 1, Reset Pin x 1, Sticker x 1, User Manual x 1