2Pcs Car Blind Spot Detection System BSD Warning Light Distance Assist Lane Changing Tool Mirror Radar Detection System Features: The radar transmits signals to the lights, there are two states, 1 is always on, 2 is flashing. Level 1 alarm: the reminder light is always on.Level 2 alarm: the warning light flashes+the buzzer sounds. Normal state of equipment:1) After the equipment is powered on, the left and right indicator lights flash 3 times respectively.2) When the car speed exceeds 15km/h and there is a target car in the blind area, the indicator light is on, and the steering buzzer sounds and the indicator light flashes. Specifications : Product name:Blind Spot Detection System Warning Light Luminous color: red Type: universal State: 1 is always on, 2 is flashing Support operating voltage: 12V Working temperature:- 25+75(-13 167) Product net weight: 27g Quantity: 2 The package : 2Pcs*Blind spot detection system warning light This product does not contain a buzzer Note : 1.Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the picture. 2.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order.