Simply plug Female connector to your power supply 5.5MM X 2.1MM plug size and male connector to your LED Light. High-quality adhesive - on back of the sensor for easy peel and stick installation Extra long 3ft cable - on both input and output side of the PIR motion sensor switch size - 2" x 2" x 0.25". DC plug size - 5.5 mm x 2.1 mm