Small sensor switch unit with motion sensor and brightness sensor, which has been implemented with an extension cord for easy installation without wiring work.You can turn lighting fixtures such as bulbs, electric stands, floodlights, and other electrical products with AC cord such as circuitors and fans with motion sensor switches to turn on power in response to human movement.Just plug this male plug into an AC outlet such as a wall and plug in an AC plug into a female socket for light equipment, and it does not require any qualification for an electrician.