The cost of a parking aid is often less than the insurance deductible incurred in an accident. Protect your investment with Rostra's economical BackZone Plus!
The BackZone Plus is a revolutionary parking assist system developed by Rostra Precision Controls designed to give every driver peace-of-mind while parking their vehicle in cramped quarters with a universal solution to color-matched sensors. The BackZone Plus audibly alerts drivers to the potential dangers of nearby obstacles through the use of an included buzzer built into a digital display that can be mounted on your sun visor or dashboard. When the vehicle is put into reverse, the system will sound a "beep" alerting the driver it has been activated. The system will further alert the driver to the presence of obstacles within each of it's detection zones. From a pulsing beep to a steady tone, the BackZone Plus system works to keep drivers aware of their surroundings. The system goes silent again only when an obstacle is no longer in range of contacting the vehicle.
Included in every BackZone Plus automotive ultrasonic parking assist system, you will find four bumper-mountable ultrasonic sensors with additional bezels added to accommodate angled and steel bumpers. These sensors provide information to the main control module via the vehicle-length wiring harness, also included. As well, each BackZone Plus kit also includes a way of alerting drivers to objects nearby visually and audibly with the color digital distance display with it's built-in buzzer and distance from an object displayed in inches.
250-1903-BZP 4-Sensor Kit with Digital Display
250-1919 Truck Fitment Kit with Under-Bumper Sensor Mounts
Download a copy of the BackZone Plus owner's manual by clicking here.
Safer Parking Decisions
Make safer parking decisions by using a BackZone Plus automotive parking assist to alert you to obstacles closing in on your vehicle while parking.
Ultrasonic Detection
BackZone Plus' advanced ultrasonic-based technology means the system offers consistency on targets of all densities with fewer false alarms.
Paintable Bumper Sensors
The flat black sensors included with each 250-1903-BZP BackZone Plus kit can be painted to match the factory fit and finish of your car!
Audible Alarm
The audible alarm included in each BackZone Plus automotive parking assist kit provides a unique way of alerting drivers to nearby unseen obstacles.
When your vehicle is within the BackZone Plus' "Safety Zone", an object has been detected but is between 45" and 98" away. When an object is detected within this zone, a slow beeping will begin emanating from the digital display and green indicator lights will illuminate to let you know whether the obejct is more to the left or right-hand side of your vehicle. As you approach the detected object, the beeping will increase in rapidity.
The "Caution Zone" of the BackZone Plus is meant to increase your awareness to the fact that an object that has been detected between 21" and 44" from your vehicle. Once inside this zone, the beeping emanating from the digital display will increase in speed and yellow indicator lights will illuminate to let you know whether the object is more to the left or right-hand side of your vehicle. As you approach the detected object, the beeping will continue to increase in rapidity.
Once within the BackZone Plus' "Danger Zone", your vehicle is dangerously close to making contact with an object that has been detected. The audible beeping alert from the digital display will increase in speed from a staggered beeping to a solid tone. All indicator lights on the display's face will be illuminated at this point letting you know whether the object is more to the left or right-hand side of your vehicle.

Hover your mouse over each detection zone for a description of how the system reacts.
Download a copy of Rostra's 3 Year/36,000 Mile warranty registration card by clicking here.