This sensor remains in a dormant state when exposed to light, such as during daytime. It activates in dark environments, such as at night, and responds to sound. When sound is detected, the connected lamp will illuminate for approximately 45 seconds. Features fine workmanship and stable performance. Offers automatic control for energy savings. High sensitivity and practical design. Durable construction. Suitable for use in corridors, bathrooms, warehouses, staircases, and similar areas.Specifications: Product Name: Sound Sensor Switch Light Sensitivity: Darkness 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 Fixtures: LED downlights, ceiling lamps, panel lights, bulbs, and other lighting devices Package Includes: 1 x Sound Sensor Switch