Features: -Temperature adjustments are simple with the large up-down arrows -The temperature can be set differently for heat and cool, if desired -The display can be either Fahrenheit or Celsius -Operation of the thermostat is annoyance free: Autochangeover is standard -The display is backlit with large numbers so its easy to read in dark hallways -Battery-less operation with NeverlostTM settings -Clean filter indicator on the display -Fully electronic means no droop for better comfort -5 minute compressor protection is standard -Proven reliability backed by the worlds largest manufacturer of air conditioning and heating equipment