Toyota Glass Breakage Security System is an OEM quality security system upgrade designed to work in tandem with your existing factory security system for the added protection your looking for. The Toyota Glass Breakage Security Upgrade will sound horn when glass is tapped on or broken to give you a first hand warning system as to the safety of your vehicle. Give your Toyota full protection with the addition of a Glass Breakage factory upgrade kit that will give you maximum notice when intruders try to gain access to your vehicles interior. Installation instructions are available for the Toyota Glass Breakage Security System Kit so you can be sure that you will achieve the proper installation and operation of this add on unit.