Features (after installation): 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 Size: 29cm Colour: Black material: plastic State: 1 is always on, 2 is flashing Support operating voltage: 5V Working temperature:- 25 +75(-13 167) Quantity: 2 The package: 2Pcs*Blind spot detection system warning light This product does not contain a buzzer