Teslas are equipped with several safety features, including cameras and alarms. When placed in Sentry Mode, the Tesla is using all many of its features to keep the car safe and is therefore far from idle or turned off. A joint effort is made using sensors, the computer, and cameras to keep the Tesla aware of its surroundings and vigilant in deterring theft or tampering. Usually triggered by motion within a certain proprietary distance of the Tesla, Sentry Mode will enter one of two modes: Alert Alarm Alert Alarm