SafetyBeep™  is a wireless device that requires no wiring or tools to install. All you do is stick it onto the rear reverse light on your vehicle. The built-in light sensor automatically activates a beeping alarm on the SafetyBeep™ when you engage your vehicle in reverse and remains on until you begin to move forward. Alerts family or anyone in your rear path that you're backing up. Now you can take the worry out of backing up, especially in trucks, minivans and SUVs. You've always backed up with caution, and now your will allow be able to back up your vehicle, car, truck or SUV's, with confidence.