Protect your vehicle from theft with this Directed DS4+ security kit. It includes a six-tone mini siren that audibly alerts you when someone tries to break into your car, and the shock/tilt sensor activates the alarm and acts as a deterrent for potential intruders. This Directed DS4+ security kit works with existing remote start systems for full security protection. | Security Upgrade For Viper Ds4+ Remote Start Systems | | Black | Best Buy