One of the largest color monitor (4.5 diameter) on the market. Automatic and real time 24 x 7 wireless transmission of pressure and temperature information from sensors to monitor. The monitor has built-in rechargeable lithium battery. It comes with a UBS charging cord. Configurable high/low pressure alarm settings. Configurable high temperature alarm setting. Visible and audible alarms. Monitors up to 26 tires. Selectable monitoring units, such as RV and/or trailer. Per axle measurements can be configured on the trailer. The color monitor is backward compatible with all our previous sensors and booster/repeater.