This car backup sensors system alerts you if there are obstacles in front of or behind your vehicle. It comes with eight sensors, four of which are installed on the front of the vehicle. The four wireless rear parking sensors will deliver an audible alarm inside the vehicle and the LCD monitor show the distance in inches. There is no need to layout the wire from the back to the front dashboard since it is wireless. The front sensors can audibly alert the driver and display the distance when objects are within about 50 inches. The color LCD, which measures 3 1/4" by 2", shows in inches how close you are to obstacles. It indicates whether the obstacle is in left or right Power to the rear parking sensors comes from your reversing lights, so the back sensors are activated only when your vehicle is reversing. Front sensors are activated when you break the car. How It Works When your vehicle is in reverse, the rear sensors are sending out ultrasonic pulses second and if the LCD monitor shows the distance in inches. The front parking sensors are on when you break the car, unless your vehicle is in reverse gear. These are the same kind of sensors as on the rear bumper, and they can help with parking in tight spaces in garages or with parallel parking. * The LCD display shows the distance of the object in Inches. * The 4 rear sensors are controlled by a wireless control box * No need to layout the wires from the back to the front dashboard. It is easy to install * The 4 front sensors and the LCD display are controlled by a wire control box. * The front sensors are activated when the car is in break. * The rear sensors are activated when when the driver puts their vehicle into reverse. * A drill bit for the size of the sensor is included.
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