Smartzone Sensor Camera Plugs Into Existing Tow Wiring, No Splicing Needed Clearly Watch Right Where You're Backing On The 3.5in. Color Monitor Includes Loud Audible Sensors (up to 95dB ) W/ 3 Audible Detection Zones For Safety 0-5.5ft. Sensor Range 12.5in.L x 6.5in.H x 1.5in.D Overall Size If you trailer your car or truck, don't run the risk of damage to your truck from your trailer hitch. The Hopkins Smart Hitch Camera and Sensor System helps you easily align the ball to the trailer for hassle-free trailer hitch alignments every time. Weather-resistant backup camera and sensor with exclusive hitch mode has 110? viewing angle to increase visibility, eliminate guesswork and see behind the vehicle for everyday backing safety.