Honeywell YTHX9421R5101WW/U

• Control heating, cooling and IAQ equipment with only 2 wires at the thermostat. Heating, cooling and IAQ equipment wires to the equipment interface module
• Smart schedule - programs in seconds for any lifestyle
• Patented interview based programming and installer setup
• Light commercial - commercial language (occupied and unoccupied), schedule holidays and custom events, remote setback economizer and time of day
• Delta T alerts and diagnostics informs customers when their system is not performing as expected with instructions to contact the dealer. Provides a sense of security and greater comfort while generating repeat business
• All Prestige® IAQ kits come standard with a return and discharge air temperature sensor to measure Delta T
• Multiple staging options to provide comfort or energy savings
• 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 user error. Saves time in troubleshooting and points the technician in the right direction
• 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
• USB port for transferring installer setup customizable reminders, custom events and holidays to multiple thermostats
• USB port for adding the dealer's full color business logo on the screen
• 3 assignable outputs to control humidification, dehumidification, ventilation and a stage of heating or cooling
• Tri-lingual - english, french and Spanish display options
• Precise temperature control (+/- 1 deg F) for reliable and consistent temperature

Application: Light Commercial or Residential