Simple and logical installer menu set-up and programming, and operation is enhanced with audio confirmation of touchscreen entries. Features like variable touchscreen security to prevent tampering, temporary and vacation overrides, and filter change reminders add convenience. The new 90 Series touchscreen thermostats (-1277 Models) include programmable fan and remote sensing, as well as the exclusive Cool Savings™ feature, providing the ultimate in comfort control. Our +/- 1° temperature accuracy will keep you comfortable and protect your HVAC systems. 90 Series Blue is the result of smart, innovative thinking. Install 90 Series Blue with confidence because it’s exclusively for the professional trade.