Feature[Blind Spot Detection System] This 24GHz Ultrasonic Radar Sensor Blind Area Detection System is a vehicle aistance device that greatly helps you detect the poible collision risks in the blind spot during driving.[Single Microwave Radar Sensor] High-speed frequency sensors for the left-rear and right-rear of the vehicle. The BSD system is activated with the turn signals, whenever there is a moving object pop into the rear of the vehicle, with the aid of LED lighting on, blinking, buzzer sound so that the driver can be cautious when lane changing to avoid the poibility of side crash accident.[Detecting Distance] The system uses a 24GHz millimeter-wave radar sensor chip, uses single transmit and four receive radar antennas, is equipped with sophisticated computer algorithms, and automotive-grade quality waterproof plugs, with a detection range of up to 10m, can monitor the closing objects in the neighbor lane within a range of 3.5m with speed gap over 0.5m/second.[Important Notes] This system integrates blind spot detection and reversing aistance.This item fits for most DC12v sedan, compact, SUV, MPVs, pickup etc, doesn't suitable for vehiche with metal bumper.Specification:Working frequency: 24GHzWorking voltage: 12VMaximum detection distance: 10MPakage include1 set Car Blind Spot Detection System