Features: brand new and high qualityOOTDTY  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. Specification: Material: ABSStyle: with Light / Without LightSize: Approx. 86x86mm/3.38x3.38inchDelay Closing Time: 45sWorking Voltage: 220vInduction Principle: Sound and Light ControlPackage Includes: 1x Switch with Light / Switch Without Lightnote: 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.