With all the increasing environmental concerns, everybody needs to save energy. Lighting is a good place to start as it accounts for 20% to 30% of electricity consumption at home by Motion Sensor.
You can easily retrofit a two-wire occupancy sensor to your existing switch. But for greater detection range, a three-wire installation is recommended – you need to plan that before the renovation work begins.
Quick and easy installation for saving time and costs and Easy Setting Especially of light level by End-User
They may install in the ceiling or on the wall (To replace a switch in the wall mainly for indoor purpose)