Infrared Sensor Switch Working Voltage: 100-240V; Best Sensing Distance: 3-5M; Hole Diameter: 25mm/0.98inch There are 4 wires, the red line is the live (L); the outermost blue line is the neutral (N); the yellow line and the inner blue line connect to the light bulb or energy-saving lamp. The PIR motion sensor switch is small in size and light in weight, easy to install and use in a room or cabinet, plug and play. Function: Auto on/off in the dark when entering the induction range, and the delay has 3 ways of 15 seconds, 45 seconds, 5 minutes adjustable. In addition to automatically controlling LED lights, it can also be used to control exhaust fans, doorbells or other devices. Widely suitable for automatic lighting corridors, stairs, bathrooms, basements, warehouses, garages, closets, advertising spots and other places. Induction angle: 110 degrees Waterproof rating: IP22 Working temperature: -20 Celsius -+40 Celsius Application lamps: LED lighting, ceiling lights, panel lights,