The commercial vehicle version comes complete with 4 under chassis mounted sensors, the control box is fully potted and waterproof and can therefore be mounted externally, the system comes with a combined audible buzzer/visual display.
> 4 x under bumper/chassis mounted sensors
> Waterproof control box
> Choice of shims to alter angle of sensors
> DSM feature (Dynamic Scan Memory)
> Combined audible warning buzzer/visial display (with 15 metre cable)
> 12/24 volt
Click here for product datasheet