Honeywell Prestige IAQ Thermostat, 18 to 30 VAC, 50/60 Hz Frequency, Programmability: 7 day Program, Changeover: Auto, Manual, Hardwired Power Source, Up to 3 Heat/2 Cool Conventional Systems, Up to 4 Heat/2 Cool Heat Pump Stages, Switch Position: HEAT-OFF-COOL-AUTO-EM.HEAT (System), AUTO-ON-CIRC-FOLLOW SCHEDULE (Fan), 8.06 sq-in Color Touchscreen Display, 40 to 90 deg F Heating, 50 to 99 deg F Cooling Settings, 32 to 120 deg F, 5 to 90% RH Non-Condensing Humidity, Horizontal Mounting, Terminal Designation: R, C, Electrical Connection: Screw Terminal, White, Dimensions: 3-1/2 in H x 4-1/2 in W x 7/8 in D

• 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
• RedLink wireless communication
• 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
• 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
• 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
• Performance logs - keeps a history of heating and cooling performance
• 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
• (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
• Extend wireless range of the equipment interface module by connecting a THM4000R1000 wireless adapter to the ABCD terminals
• Precise temperature control (+/- 1 deg F) for reliable and consistent temperature
• Multiple staging options to provide comfort or energy savings
• Lithium metal batteries contained in equipment
• 40 - 80% RH cooling and 10 - 60% RH heating humidification setting range, 40 - 80% RH dehumidification setting range
• Power consumption - 3 V-A full brightness, 2.1 V-A half brightness, 1.9 V-A backlight off

• Catalog https://assets.unilogcorp.com/267/ITEM/DOC/Honeywell_THX9421R5013_Catalog.pdf
• Catalog https://assets.unilogcorp.com/267/ITEM/DOC/Honeywell_THX9421R5013_Catalog.pdf