375917 Features - Alert you by three-step Bi-Bi sound. - Display the distances and directions of the obstacles surrounding your vehicle on the colorful digital LED. - Two digitals for displaying the distance and the colorful stripe for displaying the direction. - It contains a LED display and 4 parking sensors. - Easy to install and it's convenient for you. Item Description Three-step alarming sound: - 1.6 ~ 2.0m: 0.5Hz， slow. - 1.1 ~ 1.5m: 1Hz， slow. - 0.6 ~ 1.0m: 3Hz， harried. - 0 ~ 0.4m: ringing for long and loudly Parking Sensor Parameters: - Voltage: DC 9V ~ 15V - Rated Voltage: DC 12V - Power Cost: Max 1.5W - Respond Distance: 0.4 ~ 2.0m - Alarm Distance: 0 ~ 2.0m - Sensor Diameter: 22mm - Install Mode: Drill - Sensor Angle: X， Y， 60 degrees - Working Temperature: -30 ~ 80 degrees - Alarm Volume: 65dB Package Include 1 x LED display 4 x Parking sensor 1 x Hole saw 1 x Power Cable 1 x Control Box 1 x User Manual