Model Name:Parking Assistance Type: OSD Language:English Rate Voltage:12V Operation Voltage Range:9~16V Ultrasonic Frequency:40KHz Working Temperature:-30~80 Celsius Display Working Temperature:-20~60 Celsius Detecting distance:0~2.5m Rate Current: 20~200mA Size of Sound Alert Indicator: Φ4.1cm x 1.6cm Length of cable of Sound Alert Indicator: 2.5m Size of main control box: 8.9 x 6 x 2.2cm 4 sensors Advanced chipset for enhanced coverage and detecting Detect small objects and bars Enable you to prevent dangerous and costly collisions Provide increased safety for passengers, pedestrians and family members who happen to be around the moving vehicle. colour:black Material:ABS Package Contents: 5 x Main Control Box 5 x Sound Alert Indicator 20 x Parking Sensors with 2.5m Line 5 Cable 5 x Hole Saw 10 x Double Sided Adhesive Pad 5 x Chinese and English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.