Firstech DAS Sensor Gen 2 (Dual Stage Impact, Tilt, Glass Break, and Accelometer) Glass-Break Sensor The DAS-II is Firstech's first security sensor to detect glass breakage, which is crucial in smash-and-grab situations. Glass break sensors operate via built-in microphones that can be easily adjusted to your desired level of sensitivity. 2-Way Alarm Alerts If your Compustar system is connected to a 2-way LCD remote or DroneMobile, you will be instantly notified if the DAS sensor detects impact/tilt/intrusion/glass breakage. Digitally Adjustable Sensor The new DAS-II now features LEDs and a programming button for easily adjusting the sensitivity of shock/glass-break/tilt sensing. Required for Safe Installation If you drive a manual-transmission vehicle, the DAS is a must-have for the safe installation of a remote starter. If your vehicle is in-gear, and is remote started, the DAS will automatically halt your engine if forward motion is detected.