The Round® Non-Programmable Thermostat has a classic design and offers single-stage, non-programmable temperature control for 24V systems. This model has been a Honeywell Home staple for years and has an easy-to-read display, while the temperature reading is easily seen from a distance. Moreover, the on-demand backlighting makes it easy to read the display in a dark room or hallway. No batteries required for this product. The set point temperature is held permanently in memory in the event of a power failure and it is easily configurable by the use of DIP switches.