1.System detecting obstacle using Ultrasonic Wave Echolocation Technology
2.Wired LCD Digital Display with Built-in Audible Alert (Beeper).
3.Beeping faster if closer to obstacle and continuously if within 0.3m from the obstacle
4.Designed for cars, suvs, 4x4s, vans, pickups, trucks, RVs, Trailers, and Buses.
5.Sensor Detection Range: 0.3m - 2m

Specification
1. Rated voltage: DC12V
2. Operating range: DC10V~15V
3. Power: 4W
4. Detecting distance: 1.5M~0.3M
5. Detecting angle: H>60 degree, V>60 degree
6. Microphone sensitivity: >=73dB
7. Speaker power: 8 ohm, 0.5W

MQO: 20pcs