The car radar anti-collision system is a safety auxiliary device for car driving, parking, etc. Its principle is similar to the ranging of bats. It uses the and control of microcomputer system calculations to indicate the direction of obstacles and the distance between the car body and obstacles through sound and display, so as to prevent collisions before they happen. Functional features of this anti-collision system: Anti-scratch corners in front of the car, anti-collision in the rear of the car Eight-direction detection, eight-digit distance display Microcomputer intelligent control, accurate digital display of obstacle distance<br><br>Not affected by the environment Anti-electromagnetic interference, no effect on the original electronic system. The probe is embedded and configured in multiple colors. The sensor is exquisite and compact, and easy to install. Car reversing radar technical parameters: Detection distance: behind the car: 0.3-2.0m in front of the car: 0.3-1.2m Working voltage: dc12v (+-2v) Working current: 20ma-200ma Power: 2w Detection sound wave frequency: 40khz Detection angle: hGreater than 80 degrees vGreater than 70 degrees Working temperature: -40-80 Warning volume: 70DB Alarm prompt mode: Voice prompt: voice, beep, voice + beep, silent four modes can be switched, Digital prompt: display the distance of the obstacle and the direction of the obstacle at a glance The product appearance and printed words depending on the batch, but this does not affect use Color: White Material: plastic<br><br>Package Contents: 1 x monitor 8 x Reverse Sensors<br><br>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.