The T701i has defined what a WIFI thermostat can be. Simple, affordable, and exclusively for the professional trade. The T721i provides these same attributes to the heat pump market. This model is simple to install, simple to operate, and simple to sell. "Programming is optional, WIFI is optional, but comfort is guaranteed."
4 sq. inch display
Glow in the dark light button
Easy access battery compartment
Electric or Gas configurable
Seperate heating and cooling swing (cycle rate) adjustments
Room temperature calibration adjustments
5 minute compressor delay protection (selectable on or off)