The quality of our parking sensor system is the best one! Feature: > After entering "R" grade, the system will work automatically. > The sensor's sensitivity is 2~3times better than others. It can even detect 2mm steel wire. The detection error is <=2cm . >Detecting distance is 0.30-2.50m. It has wide detection angle and less blind zone. >It measures 4times/second. It can react to quickly moving objectives. > It can operate in rainy, snowy and foggy days. It has high anti-electromagnetism. > Clear display, self-locking connection. inlay sensor fitting, and anti-mistake distance measuring technology. >The product service life is longer than automobile service life. It has 3 year gurantee. > It has 4-way sensor. The standard cable of display is 5m. Technical data: > Working voltage: DC10V-15V > Max. power: 2w > Working temperature: -30degree~+70degree > Detecting distance: 0.30m-0.25m > Measuring error: ?.02m > alarming volume of built-in siren: 60dB > Response time: 250ms > Ultrasonic frequency: 40khz > Current consumption: <200mA