This system is designed according to Bionics simulating bats. Four detectors, which are installed on the rear of cars, scan and detect objects behind cars with ultrasonic wave. And the feedback wave will be amplified and analyzed through controller. Backing within 1.5m from barriers, a 3-step beep will inform driver for safety backing.

Specifications:
- 4 adjustable angle sensors
- 12V DC
- working temperature -40 to +80 degrees
- 3 alarm modes via 78db Piezo Alarm
- Detecting range from 0.1 to 2 Metres
- Shock and weather resistant
- Starts automatically when reverse gear is selected.