Whitey Says: The iCheck Wheel Bearing Kit Sensor 2 pack provides an essential safety feature for your caravan. Months of research and development by the experts at iCheck have led to the creation of the world's first TPMS capable of monitoring both hub and wheel bearing temperatures. These sensors send wireless signals to the car's monitor, providing real-time temperature readings and alerts. By proactively addressing any potential issues, you can enjoy a stress-free towing experience with the reassurance that your tyre and wheel bearing pressures and temperatures are under control.