The parking sensors consists of sensors, hosts, display, voice system and so on. When the car is in reverse, the reversing radar automatically starts working, the sensor detects the distance between the car and the obstacle and displays the distance on the screen.Information, easy to reverse. 1. Detection distance: 0.3~2.5m or 0.4~2.5m, 2. Alarm distance: 0.3~1.5m or 0.4~1.5m, 5. Working frequency: 40KHz 6. Working voltage: DC 12V 7. Current consumption: 20mA-200mA 8. Working temperature: -30°~70° 9. Alarm volume: 70~85dB (at 30cm) 10. Maximum power: 2w 【Guest】 1. The shell is new and fashionable, made of new ABS material. 2. Intelligent dual CPU microcomputer control, derived from military technology, accurate and reliable. 3. SMD motherboard, beautiful and neat, error rate is less than 0.3%. 4. Using imported chips, the speed is faster and more accurate. 5. Vibration elimination technology to reduce false alarm rate. 【Probe(Size:22*20mm)】1. 22mm concave design, no water accumulation, unique design to prevent false alarms caused by ultrasonic waves reaching the ground. 2. Crystal ceramic material, longer service life. 3. Anti-interference cable, not disturbed by the original car signal. 4. Beer head design, easier to connect, long service life. 5. Optional waterproof cable, easy to install. 6. The probe adopts built-in installation, multi-color configuration The sensor is exquisite and compact.