High Quality! The sensor is dormant under light conditions (e.g., during the day). Controlled by sound, it can work in dark environments, such as at night. If the sensor detects a sound, the connected light will turn on for approximately 45 seconds. Fine workmanship and stable performance. Automatic control, energy saving. High sensitivity and strong practicality. Built to last. Suitable for corridors, bathrooms, warehouses, stairs, and other areas. Specifications: Product name: Sound sensor switch Light sensitivity: Dark Model: MR-SK50A Load power: 40W Input voltage: AC180-265V 50/60Hz Sound detection range: 50-70 decibels (within 6 meters) Delay time: 40 seconds 10 seconds Photosensitive setting: 10Lux Waterproof rating: IP22 Operating temperature: -20C to 45C Product dimensions: 38mm (L) 28mm (W) 16mm (H) Compatible with: LED downlights, ceiling lamps, panel lights, light bulbs, and other lighting fixtures or electrical appliances. Package includes: 1 x Sound sensor switch