... inner beeping sound. 2. With CE, FCC, Emark. Mirror Parking Sensor Specification:New Color LED display in the rear mirror ... caravans, vans, motorhomes, trailers High quality and easy to install.Parking distance display and alarm.Technical Parameters: Rate voltage12VOperation voltage range9 ... Rearview mirror with LED display1x Main control box 4x Parking sensor 1x Power cable 1x 22mm drill 1X English ...