Compustar FT-ALARMIT Alarm Upgrade Kit for Compustar Remote Start Systems Adds security sensor, LED, E-LOCK relay, and siren to your Compustar remote start system. Works with select models. Key Features 2-Way Alarm AlertsIf your Compustar remote start system is connected to a 2-way LCD remote or DroneMobile, you will be instantly notified if your alarm is triggered. The Smartest Security SensorThe ALARMIT KIT includes a DAS 3-in-1 sensor that adds the following security features to your vehicle: dual-stage shock detection, tilt sensing, and accelerometer. The Loudest SirenThe alarm siren included in the ALARMIT KIT features a speaker that gets as loud as 105+dB; capable of scaring away intruders and alerting those nearby. What is an "E-LOCK Relay?"The E-LOCK relay included in the ALARMIT KIT functions as a "starter-kill", which prevents your vehicle from being driven while your security system is armed; thus preventing auto-theft/carjacking. Standard Security Upgrade Install Features: Dual Stage Impact & Tilt Sensor 6 Tone Siren Requires prior installation of a compatible CompuStar Remote Start system The FT-ALARMIT Upgrade requires prior installation of a compatible Compustar Remote Start system. Contact your local Car Toys store for details.