The RVS-127 boasts a blind spot sensor system that promptly notifies the driver of potential hazards both on the vehicle's front and sides. This system comes in handy for larger vehicles, as it includes 3 warning zones (Red: 0-1.7ft / Orange: 1.71-3.2ft / Yellow: 3.3-6.5ft) that indicate the proximity of objects at various distances. Say farewell to blind spots when making wide turns! While visual alerts are always present, audio warnings will only trigger if the turn signals are activated or the brake pedal is being used. This adaptable system can be customized with either 4 or 6 sensors. The 2 extra sensors on the driver's side offer additional protection for both the vehicle and the diesel tank. Users can also choose between an external LED with GPS (which disables the alarm at higher speeds when the driver is not using the brake or turn signal) or two external speakers with built-in LED