Compustar Firstech FT DAS II 2nd Gen DAS Sensor Dual-Stage Shock Glass Tilt II. Description: Firstech 2nd Generation (the latest) DAS Sensor - Dual Stage Impact, Tilt, Glass Break, and Accelerometer Sensor. FT-DAS-II is Compustar's Digitally Adjustable Sensor that combines a dual-stage shock sensor, tilt sensor, and an accellerometer into one tiny module. When you install the FT-DAS-II sensor, you can adjust the sensitivity of your sensor to detect two levels of shock, and will trigger your Compustar or factory alarm when impact is detected. If you have a 2-way remote, you will receive an alarm alert. The built-in accellerometer acts as a protective measure when adding a remote starter to a manual-transmission vehicle. If the DAS senses any forward motion when remote starting, the DAS will immediately shut off the engine, halting the vehicle.