The Honeywell Focus Pro 5000 digital thermostat provides a quintessential blend of energy efficiency savings and performance. Having the largest backlit screen in its class makes the digital display easy to read and simple to navigate. In addition, the Red Link wireless technology built into the Focus Pro 5000 allows you to upgrade, re-locate, or add zoning to your HVAC system with little effort and best of all... no more wires to mess with!