The Blue™ Universal and Single Thermostats are designed to deliver a new level of comfort. They feature the largest display on a keypad operated thermostat, as well as simple and logical installer setup and programming, enhanced by audio confirmation of entries. Features like variable keypad security to prevent tampering, and temporary and vacation overrides, add convenience. These thermostats offer power stealing assist for maximum battery life, remote sensing, as well as the exclusive Cool Savings™ feature providing the ultimate in comfort control and energy savings. The +/- 1° temperature accuracy will keep your customers comfortable and protect their HVAC system. Emerson® Blue is the result of smart, innovative thinking.