Features Make your driving safer and more convenient with this Radar Camera 1. The buzzer will alarm when the obstacle is detected by radar, and two LED lights increase the night vision effect, let you park your car accurately, not worry about Scratched your car. 2. Easy to install and run. No drilling required, come with a install synopsis. 3. When a vehicle enters 2 meters distance obstacle, video radar system indicating the obstacle distance. When a vehicle enters 1.2 meters distance obstacle, buzzer starts alarm. 4. Waterproof camera with 170 degrees wide viewing angle, expand the car rearview perspective; Waterproof camera shot to avoid the scoring from the rainwater and the slopes on the road. Specification Resolution: 720x480 View Angle: 170 degree Alarming Vol: 70dB90dB Detection Range: 0.3m2m Detection Angle: 30 degree Work voltage: DC10-15V Current Consumption: 150mA Video Type: NTSC/PAL Min. Illumination: 0.1Lux Waterproof Grade: IP67 Work Temperature: -40-85 Package list 1* camera lens 1* video cable 1* power cable 1* buzzer 2* screws 1* user manual How to Use With external buzzer, it will begin to alarm when the car is 1.2m distance from the barrier. When the vehicle keeps 2m distance from the barrier, the visual radar system begins to indicate the obstacle distance.