Features: The system uses millimeter-wave radar sensors to monitor the environment behind and to the sides of the vehicle, monitor the driver's ''field of view'' blind spot, and provide a helpful warning function when the driver is driving normally or changing lanes. The detection area is divided into two sections: left and right 4.4m (middle 1.5m no alarm), rearward 10m is the blind zone monitoring area, to enter the blind zone movement of the vehicle for early warning, at this time the same side of the LED light is always on, when playing the turn signal, the warning level rises to buzzer sound, the same side of the LED light flashing. The detection distance reaches 50m in the LCA lane-changing warning function when the vehicle changes lanes, the alarm distance reaches 40m, and when there is a target vehicle approaching in the approaching area, and when the collision time between the target vehicle and this vehicle is less than or equal to 5.0s, the ipsilateral LED lights are always on, if you hit the turn signal at this time the lane-changing buzzer sounds and the ipsilateral LED lights flash. Specifications: 1.System properties: Working voltage: 9-16V Working temperature: -40 to 80 Power consumption: 2.5W Waterproof grade: IP67 Frequency band: 77Hz-79Hz Refresh rate: 20Hz Communication interface: UART Baud rate: 115200 Shell size: 28 * 28*28*22.5mm 2.Antenna performance: Number of transceiver channels: 3Tx*4Rx Pitch beam width: 25 Horizontal beam width: 45 3.Detection performance: Range resolution: 0. 2m Speed resolution: 0.2m/s Speed measuring range: 200 km/h The ranging accuracy is better than 0. 2m. Velocity measurement accuracy: better than 0. 2m/s Angle measurement accuracy: better than 1 Detection distance: 50m 4.Blind zone monitoring function -BSD: System starting speed: V>10Km/h. Horizontal range of early warning: 1.5m < x < 4.4m,-4.4m < x