The Doran 360 tire pressure monitoring systems continuously monitor the pressures in tires and provide real-time alerts with any drop below the customizable limits that you want to maintain in your tires. The wireless valve stem-mounted sensors and monitor are designed to hold up to the rigors of the road, with straightforward installation and simple programming steps. The 360HD tire pressure monitoring system provides drivers with at-a-glance status updates with its patent-pending Green Means GOOD indicator. The 360HD system monitors up to 36 tires for truck, tractor and trailer applications; wireless tire pressure sensors screwed onto valve stems and transmit a signal to a monitor in the cab; and it features multiple alarm types (audible, location, pressure and warning symbol) plus a "Fast Leak" alarm. It is designed for dual wheel or wide-base single configurations and installs in about an hour.