Type：Car Parking Sensor Product Name：Wireless parking sensor Function characteristic： 1. Radar Sensor activate when the reverse gear is engaged. 2.Detected in front & back 2).Full-weather design, Un-affected by wind, Ice, Snow & Rain 3.Use the RF wireless technology 3.Chirping warning & wireless digital display 4. Display in Green, Orange & Red 5. Left/Right Obstacle Display 6. Sensor color optional 7. Original PHILIPS Chip, Quality guarantee Technical parameter： Operate Voltage: 10-15V Detecting Range: 1.8m ~ 0.3m Max Power Consumption: 4 W (Max ) .Alarming Volume of external Siren: 80dB Optional Temperature: -40°C ~ + 80°C.Alarming Volume of built-in Siren: 80dB The example of the detecting range of different object . The obstacle The Detect Range Wall 1 Spare meter , ＜2.0m Car ＜1.5m Adult ≤1.2m 0.4m?1.0m Pillar ≤1.2m