| 403F |
For tractor/truck module protection. Warning unit mounted
in cab. Complete with cable and susie connector. Three sensors at rear |
| 403R |
For trailer module protection. Cabling and three sensors mounted at
the rear of the trailer |
| When the trailer/truck unit is travelling alone the sensors
at its rear are live.When the trailer is linked-up to the tractor the
tractor sensors are deactivated and the trailer sensors are switched
live |