Features: ◇System activated automatically when reverse gear is engaged. ◇Dual CPU Systems. ◇Broad LED display with 4 light colors. ◇Intelligent anti-interference analysis. ◇Real time distance detection: 0.3m to 2.0m/2.5m. ◇Obstacle orientation indication. ◇Power protection of wrong connection. ◇Suitable for all cars, SUV, Van, 4X4 ◇Real Time Response. ◇Antifreezing,work well under cool weather