• Thermostat works standalone or with the THM5421R1021 equipment interface module or with the TrueZone wireless adapter
• Smart schedule - programs in seconds for any lifestyle, patented interview based programming and installer setup
• RedLink wireless communication
• Light commercial - commercial language (occupied and unoccupied), schedule holidays and custom events, remote setback, economizer and time of day
• Plain language setup, no manual needed
• Alerts and user interactions log - keeps a searchable history of alerts and setting changes to the thermostat to determine if there is a system malfunction or if the issue was caused by a user error
• The alert and user interaction logs are viewable on a computer after you download them from the thermostat to a microSD card
• Customizable service reminders allow dealers to remind their customers when its time to call for service, when their warranty is expiring and to provide customized alerts
• MicroSD port for copying the installer setup, customizable reminders, custom events and holidays to multiple thermostats
• MicroSD port for adding the dealer's contact information on the screen
• (1) assignable output on the TH8321 model to control humidification, dehumidification, ventilation or a stage of heating/cooling
• The TH8110 and TH8320 models require the use of a wireless indoor sensor to control humidification and dehumidification
• Extend wireless range of the equipment interface module by connecting a THM4000R1000 wireless adapter to the ABCD terminals
• Precise temperature control (plus or minus 1 deg F) for reliable and consistent temperature
• Multiple staging options to provide comfort or energy savings
• (1) assignable input can be used with a wired outdoor, indoor or discharge sensor
• (4) assignable inputs on the equipment interface module can be used with wired outdoor, indoor or discharge sensors, occupancy sensor for remote setback and dry contact devices to trip pre-packaged or custom alerts such as a full drain pan or water leak
• Lithium metal batteries contained in equipment, 9 hazmat information
• 1.44 VA backlight on, 1.32 VA backlight off power consumption

Honeywell TH8321R1001GS