Features: The system is a vehicle auxiliary device, which can help the driver to change lanes safely when driving. When two vehicles are in danger of colliding during driving, the warning lamp will light up to remind the driver. If the left/right turn signal lamp is turned on, the buzzer will make a sound. Blind spots detection starts when the car starts. When you open the door, if there are pedestrians, cars and motorcycles on the side, the system will detect them and give you an accurate alarm. The blind spots detection system can distinguish between stationary objects and moving objects. Pedestrians and vehicles in driving state will activate the alarm when they are detected. When waiting for traffic lights, after parking, the vehicle behind you is stationary, and the blind spots detection system does not alarm. Specifications: Material:Plastic Size:As Picture Shown Operating voltage: 9v-32v Operating frequency band: 77 -79Ghz Working temperature:-25℃~ +75℃(-13℉~167℉) Power consumption: <3w Waterproof grade: IP67 Range resolution: 0.2M (0.656ft) Ranging accuracy: better than 0.1M Detection range: 0-50 meters (0-164 feet) Horizontal angle range: 150. Pitchs angle range: 10 Speed measurement accuracy: 0.1m Probe: 1 Alarm prompt: Yes. Detection range: 50M Reminder type: acoustooptic reminder Screen size: no screen Early warning type: active early warning Radars frequency: 77Ghz Function: BSD blind spots monitoring Applicable models: 12-24V Package Includes: 1 Set Blind Spots Detection System note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.