**Selectable to 5-1-1 (Weekdays, Saturday, Sunday) or 5-2 (Weekdays, Weekend) programmable thermostat. **Large, clear, backlit display - easy to read in various lighting conditions. **Display size options - available in large screen or standard. **Precise comfort control (+/-1 F) - maintains consistent comfort to the highest level of accuracy. **Simplified programming and operation. **Easy change battery door - flip out door allows for easy battery replacement without removing or disassembling the thermostat. **Built in instructions - simple, pull out instruction manual. **Adaptive Intelligent Recovery™ - ensures programmed temperature is reached by programmed time. **Temperature range stops - prevents user from setting the temperature too high or too low.