Product Info

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The black sensors are fitted on the front (tractor) wheels and blue sensors fitted to rear (trailer) wheels.
For rigid vehicles, coaches & buses: Black at front, Blue at rear
Different coloured sensors make it easer to identify the fault when an alert occurs on the receiver and to assist
the driver/engineer in locating where the fault may lie on the vehicle. This is in addition to the sensor also
flashing for 3 minutes.