Large Sensor to replace a current sensor, add to system or keep as a spare. The large sensors have a larger antenna so are better suited for mounting on the caravan. Or if you are using on a high pressure tyres they can handle up to 199psi.

$30.00
One spare sensor to suit the TyreWatcher X2 Unit which you can see HERE.
Large TyreWatcher X2 Spare Sensor.
The sensor will come blank on top with no number to be put in any position or be kept as a spare.
Allan McInnes –
Works well except on rough roads
Dean Sloan –
Just great