Description:1. The sever colors display for orientation of obstacles.2. The humanity design & human voice notification for distance of obstacles.3. The provoke design for voice & digital make it more harmonious & attractive.4. Prevent from corner coliding & impacting with special design for easy operating.5. The appearance of sensor & body of vehicle is a perfect match, just like original binding accessories.6. The vocal notification of Bi-Bi & digitall distance display show the characteristics, especially at night. Feature: Operating Voltage: DC12V2 V Operating Temperature: -20℃~+70℃ Operating Electric Current: 200m A50m A Detective Range: Front: 0.3--0.8m Back: 0.3--2.0m Detective Angle: H80 V70 Package Included:1 X Main Control Box 1 X Buzzer 4 X Parking Sensors With 2.5m Line 1 X Hole Saw 1 X Power Cable 2 X Double Sided Adhesive Pad 1 X User Manual