HALLWAY TURN ON LIGHT IN DARK: When people turn on the lights, they turn off the lights automatically after the delay. The delay time is less than 30S; Applicable to automatic lighting of corridors, toilets, basements, warehouses, garages, etc., automatic control on/off air ventilation, exhaust fans, and other electrical appliances; Brightness sensitive: It adopts light-sensitive control, it does not turn on the light in daytime or strong light environment, and you also can adjust the light in any light environment. Status indication: Inductive effective LED indication for easy installation and fault analysis. Temperature compensation: Topite has a temperature compensation chip to reduce the sensing distance (5m-8m ) affected by temperature. Specification: Materials: ABS Size: Approx. 52 x 40mm/ 2.05 x 2.56 x 1.57inch Detection Range: 5-8m Work Voltage: 12V Package Includes: 1 Piece Sensor Switch(30 Pack)