6. Movement sensor switches: Movement sensor switches use infrared technology to detect movement inside of a room. They quickly turn the lights on when another person enters the region and turn them off right after a certain period of inactivity. ) You can also have to have a neutral wire, https://safe-electrical-wiring77160.tusblogos.com/35037808/how-much-you-need-to-expect-you-ll-pay-for-a-good-smart-light-switch-white-clear-frame