When the Sensor Light Switch is turned to "ON" or "OFF", it can be used as an ordinary switch, and when it is turned to "PIR", it can be used as an infrared sensor switch.Adjustable Sensitivity -- The light sensitivity of Sensor Light Switch can be adjusted itself. Sensitivity adjustable range and sensitivity from 30% to 100%.Adjustable Delay Time -- The delay time of Sensor Light Switch can be adjusted itself. Occupancy sensor light switch features variable time delay from 5s-7min.Internal Electromagnetic Compatibility -- The internal electromagnetic compatibility design of Sensor Light Switch will not affect the normal operation of other electrical appliances.Commonly Used -- This Sensor Light Switch is commonly used to control lighting and extract ventilation for Stairs Corridor KitchenDelivery Quantity: 1pc,Package Contents: Only the above package contents, excluding other products.Size: 80x80mm(Reminder: The size is measured manually, please allow 1-2 cm measurement error)color: White(Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color shown on the picture.)