Produces a loud beeping sound when vehicle is put into reverseSmall in size for easier installationThe warning sound can be a life saverEasily installs to any 12-volt vehicle with one wireIncludes mounting boltThe Wolo BA-52 produces a loud beeping sound when vehicle is put into reverse. Small in size, for easier installation. The warning sound can be a life saver. Easily installs to any 12-volt vehicle with one (1) wire. Includes mounting bolt. Instructions in English / Spanish.