Crimestopper CA-5017 Front Parking Assistant System with Audible Buzzer Front Parking Assist System with Audible Buzzer (4) ultra-sonic sensors with "quick disconnect" waterproof connectors Sensors can be painted to match the color of the vehicle External buzzer for audible warning (No LED display included) Learning function for cars with tow-bars, spare tires or other protrusions on the rear of the vehicle