Infrared Sensor Switch working voltage: 100-240V; Best sensing distance: 3-5M; Mounting Hole Diameter: 25mm/0.98inch There are 4 wires: the outermost brown wire is Live wire (L); the outermost blue wire is Neutral wire (N); Yellow wire and inner blue wire connect to light bulb or energy-saving lamp. PIR motion sensor switch features small size and lightweight, easy to install and operate in room or cabinet, plug and play. Function: Auto switch on/off in the dark when you enter the感应 range, and the time delay has 3 settings: 15 seconds, 45 seconds, 5 minutes adjustable. In addition to automatic control of LED lights, it can also be used to control exhaust fans, doorbells or other devices. Suitable for auto lighting in corridors, stairs, bathrooms, basements, warehouses, garages, closets, advertisement lights and others. Induction angle: 110 degrees Waterproof rating: IP22 Working temperature: -20°C to +40°C Application: LED lighting, ceiling lights, panel lights, floodlights, etc. Color: As shown Material: Plastic Package Contents: 1 x Mini Motion Sensor Light Switch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual item. Measurement allowed error is +/- 1-3cm.