[Blind Spot Detection System] This 24GHz Ultrasonic Radar Sensor Blind Area Detection System is a vehicle assistance device that greatly helps you detect the possible 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 possibility of side crash accident. | [3 Major Functions] This Blind Spot Sensor integrates BSD-blind spot monitoring, LCA-parallel lane change assist, Dow -Open Door Warning (optional two doors) 3 functions to help detect the possible collision risk. | [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 12m, can monitor the closing objects in the neighbor lane within a range of 3.5m with speed gap over 0.5m/second. | [Normal Driving] When the car behind is slower than our speed, there is no danger of collision, and the blind spot monitoring does not give an alarm. When we overtake, the speed is faster than the car behind, and no alarm is given. | [Important Notes] This system integrates blind spot detection and reversing assistance.This item fits for most DC12v sedan, compact, SUV, MPVs, pickup etc, doesn't suitable for vehiche with metal bumper, and professional installer installation is required. | This Radar Blind Spot System is an OEM-grade universal solution that will only function on vehicles with a soft rear fascia. This product cannot function through metal bumpers.