buyers'show Function: Rear&Front View Car Parking Sensors Main Feature: - With 8 car parking sensor, protecting your vehicles and cars omnibearing - With a display monitor, Support real time response and detailed reversing information displaying on the LCD display screen - Easy to install, compatible with any vehicle - Support weatherproof, can works in the rain and snows - System automatically activates when reverse gear is engaged - Set-up alarm, Support beep alert or via the color of the display screen - Dual CPU system - With intelligent anti-interference analysis - With power protection function for wrong connection 8 Parking Sensor: - 2 for rear-left, 2 for rear-right - 2 for front- left, 2 for front-right Display Screen: 1.8"screen Alert Type: Beep alert Alert Distance: - Rear sensor: 0.3m ~ 1.5m - Front sensor: 0.3m ~ 0.8m Display Distance: - Rear sensor: 0.3m ~ 2.0m - Front sensor: 0.3m ~ 0.8m Alarm Volume: < / = 80dB Operation Voltage: 10V ~ 16V Power Consumption: &lt; 6W Operation Temperature: -40 ~ 80 Degrees Celsius Sensor Installation Height: 50cm ~ 70cm 3 Optional Colors of Sensor: Gray / Silver / Black (You can choose one certain color from these 3 colors) Dimensions: - Front sensor cable length: 6 meters - Rear Sensor cable length: 2.5 meters - Sensor hole diameter: 22mm - Display Monitor: 75mm x 54mm x 22mm - System Box: 156mm x 88mm x 24mm About the power cable connection it is as below: - Yellow: Car Reverse Brake Light + - Blue: Car Feel Brake Light+ - Black: GND - Red: ACC Power + This product work like this, when you parking your car ahead: - Press on the brake, the front parking sensor start to wrok - If there is no barrier or road block, the sensor is at the status of sleeping. The display will not start to work avoided the affect to driving safety. - If there is a roadblock, the sensor will start to work, if reach the alarm distance, it will start to alarm. when you parking your car reverse: - Start to reverse your car, the backup sensor will start to work, and two side of front sensor will start to work at the same time, just avoid damage to front side. - If there is a roadblock, the sensor will start to work, if reach the alarm distance, it will start to alarm. - If there is no barrier, the alarm is at the status of mute. After Sales Service: 1 Year Warranty Package Weight : 790.0 G / 27.87 Ounces Package Dimensions (L*W*H) : 258*190*65 MM / 10.16*7.48*2.56 Inches Retail Packaging: Yes, Colored Box 1 x Dispaly Monitor 1 x Command Module 8 x Parking Sensor 1 x Power Supply Cable 1 x Hole Saw 1 x Instruction Manual