Usage Tips:Describe: ! The sensor is dormant under light conditions (eg during the day). Controlled by any voice, it can work in dark environments, such as at night. If the sensor senses a sound, the controlled light will come on for about 45 seconds. Fine workmanship and stable performance. Automatic control, saving energy. High sensitivity and strong practicability. Built to last. For corridors, bathrooms, warehouses, stairs, etc. Specification: Product name: Sound sensor switch Sensitivity to Light: Dark Product model: MR-SK50A Load power: ≤40W Input voltage: AC180-265V 50/60Hz Induction sound: 50-70 decibels (within 6 meters) Induction delay: 40 seconds ± 10 seconds Photosensitive setting: ≤10Lux Waterproof grade: IP22 Working temperature: -20～45℃ Product size: length 38mm × width 28mm × height 16mm Application lamps: LED downlights, ceiling lamps, panel lights, light bulbs and other lighting fixtures or electrical appliances. Package includes 1*Sound sensor switch