Utilizing Preco™s Standard PreView System with the new S.A.S. Alarm (built from the same technology as the 6000 series alarm) makes backing safety better than ever.  When the vehicle is in reverse, the Self-Adjusting S.A.S. Alarm operates at 5 decibels above the surrounding noise.  Once the PreView unit detects an object, the output of the alarm increases to the full 112 decibels, warning those near the vehicle and the operator of a dangerous situation.  The In-Cab Display provides an audible and visual notification of an object within the danger zone of the vehicle.