One of the easiest ways to reduce energy consumption and lower operating costs is with durable infrared motion sensors from Grainger. They can automatically turn the lights on or off when someone enters or leaves a specified area. Also called a light sensor, this type of passive infrared sensor (PIR sensor) is typically installed on walls or ceiling fixtures. When the motion sensor detects the body heat of someone moving in the room, it initiates a pre-programmed action, like turning off the lights. Grainger carries hundreds of motion sensors in a wide range of colors, configurations and time delay features. Check them out today.