Audiovox Wireless Reverse Obstacle Detection System:$34.99
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List Price: $179.99
Features :
Wired or wireless trailer hitch mount rear collision avoidance system
Takes away the blind spot while backing your vehicle
A loud progressive alert sounds from an audio unit inside the vehicle when your vehicle comes within 7 feet of objects and people
Avoid injury to family member or pet and damage to vehicle
Sensors transmit invisible ultrasonic waves that bounce back from stationary or moving objects as the vehicle is backing up
As the vehicle gets closer, the alert beeps faster
Audible alert progresses when you reach within 5 feet
Audible alert remains steady when you approach within 3 feet
Ultrasonic technology to help you detect objects that you are unable to see
Automatically scans behind your vehicle to detect objects within your path when reverse gear is engaged
Designed for almost any vehicle with a 2 inch or one and one fourth of an inch hitch receiver
Sensor housing can be used as a step 250 lbs max
Locks into the hitch receiver
7-way connector plugs into vehicle receptor
Includes 2-pin power cable for use on vehicles without 7-way receptacle
Audiovox Wireless Reverse Obstacle Detection System, ASH400 - ASH400 - Buy.com
Audiovox Wireless Reverse Obstacle Detection System:$34.99FS 
