7 day programmable - maintain the pre-set program schedule for up to 20% energy savings, or modify the schedule to fit your lifestyle. 208/240V;Electronic temperature control - precision of テつア1 F saves up to an additional 10% on heating bills; 15 A (Resistive), 50/60 Hz, 4 Wires, Double Pole, 15 minute heating cycles, Battery Free;Soundproofed for quiet operation - reduces the clicking noise commonly heard with conventional thermostats;Large, clear, backlit display - easy to read in various lighting conditions;Early start - ensures programmed temperature is reached by programmed time