Pete’s Dynamics Motion sensor is an energy saving device .It is a microwave sensor with high frequency electro- magnetic wave(3.2GHz) having an integrated circuit. When a person enters the detection field it switches ON the lights and then turns then OFF too when no motion is detected. Time for light to turn ON/OFF can be increased or decreased by settings given in the sensor. Day/Night operations of the lights can be adjusted in the settings also.Durable and Accurate even in high temperature or normal temperature than regular PIR sensors,Quick response time, Can even Detect outside the glass or thin surface Automatically Switches ON /OFF your Lights i.e Bulbs ,CFLs