Buyer's Review: Description: The sensors car in back, detection range can be accurate to 0.3 ~ 2.2m.Digital LCD display (number & light). Help to provide increased safety for paengers, pedestrians and family members who happen to be around the moving vehicleSpecifications:Rate voltage: 12V DC Rate operating range: 10.5V - 16V DCRate current: 100mA - 300mAUltrasonic frequency: 40KHzControl moudle working temperature: -30 - 80 celcius degreeDisplay working temperature: -20 - 70 celcius degreeSensor diameter: 18mmInstallation mode: DrillingSound: Heart beat type, more recent alarm more rapidly Feature: Digital Display Voice report distance Accurate detection With reverse start Suit all weather (Mute/Buzzer/Human Voice) Smart Start Distance Display Voice Broadcast Waterproof probe Beep Prompt Why Do You Need A Parking Sensor ? 1.Prevent rear car collisions 2.Anti-stenosis road 3.Prevent collision when waiting for a red light 4.Prevent judgment of distance errorsfrom colliding 5.Prevent obstacles frombeing seen at night 6.Anti-stop collision Connector: SBK:Voice speaker interface DC:Power interface DISPLAY:Display interface ABCD:Probe interface 1x LCD Display 1x Host 6x Sensors 1x Display Sticker 1x Power Cable 1x Retail Box 1x English User Manual 1x Hole Drill