The non-programmable control is very simple to operate. Has the same digital display without all the programmable functions. Other features include a floor/air sensor that controls floor temperature; built-in ground fault protection with no need for a separate GFCI (in most code areas); temperature range of 59° to 99°F; 15-amp capacity to control up to 150 sq. ft. of 120-VAC MasterHeat mats or 300 sq. ft. of 240-VAC mats.