Honeywell TH4210D1005 Electronic Programmable Thermostat with Pullout Instructions Weekday/Weekend programming - 5-2 (Weekdays, Weekend) programming Backlit digital display - both current and set temperatures are easy to read in various lighting conditions Precise comfort control [+/-1 F (+/- 0.5 C)] - maintains consistent comfort to the highest level of accuracy Basic operation - easy-to-use slide switches allow you to select the heat or cool mode, and operate the fan Adaptive Intelligent Recovery - ensures programmed temperature is reached by programmed time