Through installing 1pcs of 77GHz millimeter wave sensors on the  car rear windshield , when the car is moving, if any moving object closer to blind area( 3 meter from right and left side ,50 meters from behind）,the object will be detected by system sensor , the LED indicator will turn on and keep shining for reminding driver, in this condition, if the driver wants to change the lane, the buzzer will beep sounds for reminder.       

1, This system combine the 1 radar sensors, one buzzer and 2 indicate LEDs.  

2，Sensor frequency: 77GHz , 2T4R

3, Wide voltage from DC 9V to 18v, it is easy to install on the car;

4, LCA Measure distance 0.3~ 50M for truck and 10m for human.

5, BSD Blind spot detection system.

6, LCA lane change decision aid system, 

7, RCTA Rear Cross Traffic Alert  8. AOA: Overtaking Warning      9. Same speed alarm (blind zone hold alarm)