Cottrell is now offering the Doran 360TM Tire Pressure Monitoring System! The Doran 360TM Tire Pressure Monitoring System has sensors that are mated with the valve stem of each tire or integrated into the TIREMAAX system. The sensors take continuous tire pressure and temperature readings and will transmit to the readings to your in- dash monitor which then reflects the “Green Means GoodTM “Led Light or the Red Alarm Light.