This product is a wall-mounted human presence sensor with automatic control system. Through the mobile terminal APP or smart building management system platform, users can know whether there are people present or existing in the sensing area, and provide judgment control information for security, lighting, HVAC and other systems. The system cost is low and the energy saving potential is great. Can be widely used in homes, warehouses, open office areas, conference rooms, classrooms, libraries, corridors, etc.