Features: and High sensitivity, stable performance and durability. Used in corridors, bathrooms, warehouses, stairs, etc. The sensor is in a dormant state under light conditions, such as during the day. If the sensor has a sound, the control light will be on for about 45s. It can be controlled by any sound, and it can work in a dark environment, such as at night. Package Includes: 1x Switch with Light or Switch Without Light Specifications: Material: ABS Style: with Light or Without Light Size: Approx. 86x86mm or 3.38x3.38inch Delay Closing Time: 45s Working Voltage: 220v Induction Principle: Sound and Light Control note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. High sensitivity, stable performance and durability. Used in corridors, bathrooms, warehouses, stairs, etc. The sensor is in a dormant state under light conditions, such as during the day. If the sensor has a sound, the control light will be on for about 45s. It can be controlled by any sound, and it can work in a dark environment, such as at night. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.