Long distance driving at night? Worried of falling asleep at the wheel? With the new Driver Fatigue System from Vuemate these concerns are of the past! The system comes with a small camera that you mount on your dash facing the driver which detects drowsiness in the driver's eyes. Start nodding off and the device will set off an alarm keeping you alert at all times. Its intelligent tracking algorithm keeps it very accurate in distinguishing between regular driving behavior and states of drowsiness. Perfect for trucks and semi-trailers, the RVS-335 has a large detection range (70-110cm). Installation takes minutes with no setup necessary. ***Maximize safety with the optional RVS-335-GPS External GPS Module and RVS-335-VC Vibration Cushion. The GPS module turns off the system when the vehicle is idling or at very low speeds (~ 3MPH) and turns on the highest sensitivity when traveling at high speeds. The vibration cushion vibrates whenever the driver fatigue alarm activates.