The product is a new energy-saving switch that adopts a microwave sensor with a high-frequency electro-magnetic wave (5.8GHz) and an integrated circuit. It combines automation, convenience, safety, energy-saving, and practical functions. The wide detection field depends on the detectors used. It works by receiving human motion. When someone enters the detection field, it can activate the load immediately and automatically identify day and night. Detection is possible through doors, panes of glass, or thin walls.