1. The parking sensor is adjustable, allowing you to aim at the place you want in your vehicle so you can park in the same place consistently and accurately. 2. Parking each time in the same place reduces the possibility ofdamage to your vehicles, walls or other objects. 3. The parking system works by detecting when a vehicle is approaching and emitting a bright light. 4. The location where the beam shines on the vehicle depends on where on the roof you choose to mount it. 5. Guided parking system also helps you get out safely. Name:Parking Sensor Output voltage:5V Battery:3xAAA batteries (not included) Operating mode:body induction Note:Do not disconnect the light for 30 seconds Applicable to:garage, underground parking How to use:First fix the car parking device on the ceiling of the garage, choose an perfect position where the laser beam can be seen through the car glass, then drive the car into the garage, remember the positioning of the laser beam on the car, and then move the car Just reach the before laser beam position when driving in. Simple and convenient to use, accurate parking and safer car use! Plug Type:US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the United States, the Philippines and so on. Voltage:AC110V Colour:Black-Gray Material:Plastic Package Contents: 1 x Parking Sensor 1 x Power Adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.