With the Hella TC400 Tire Pressure Monitoring System you no longer have to stop your vehicle to check the tires. They can be checked at any time, even while moving at a simple push of a button. Correct tire pressure avoids unnecessary fuel consumption, tire wear, dangerous aquaplaning and inadequate traction. The necessary checking takes time and effort and without permanent monitoring, uncertainty when driving can be an irritating feeling. The TC400 Monitoring System offers a fully-active, radio-controlled system for permanent checking of tire pressure and temperature. Unique to the TC-400 is the adjustable background color of the display. The look of the display can thus be matched to the vehicle-specific instrument lighting. For installation of the control system, the sensor valves must be fitted to all four wheels. The ideal time to take the first step into controlled safety is the next time you change tires. The kit contains everything required for 4 wheels.