Specifications: Rated voltage: 12V Load current: 10A Load power: 2200W Delay off time: 0.1S Frequency: 50-60HZ Weight: 50G Induction principle: light control Sensing range: 10M Off-shelf size (height*length*width): 4.3*4.2*3.5CM (1.69*1.65*1.37inch) Contains: 3 pcs Installation Precautions: Do not install this unit in a particularly dark place between chalks or in direct sunlight. The automatic switch white line black line is connected to the power supply, and the white line red line is connected to the load. We highly appreciate all customers opinions to improve the selling, also if anything you unsatisfied, please contact us for probable best solution. Package Includes: 3Pcs