Motion detector and dusk to dawn switch with light intensity threshold adjustment and method of threshold adjustment

摘要

The dimming system (1) is connected to an electrical light source (4) and has a day light sensor (6) and a motion detector (9) both of which are connected to a microprocessor (8) that controls the load (3). When the lighting is on and no movement is detected in the room then the dimmer switch (5) reduces the lighting level.