Product details:

The ESP Electronic Programmable offers 7 individual day programmability; 4 time and temperature settings. 3 wire, line powered. Large back-lit display. This thermostat took years to develop and has become a popular model. All the features you want without too many buttons. Simple is always better. We have added backlighting to the full-size display and an on/off switch to control the illumination. On the front 2 simple buttons control the temperature up and down, while all the programming keys are hidden under the front cover, protected from wandering, unauthorized fingers. Comfort and convenience are always our primary goal at King.