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Honeywell Home THX321WFS3003W/U T10+ Pro Smart Thermostat with RedLINK

Currently 8 in stock.

Honeywell Home THX321WFS3003W/U T10+ Pro Smart Thermostat with RedLINK, 3 Heat/2 Cool

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Sense the temperatures and humidity in the places that matter most with the T10 or T10+ Pro Smart Thermostat. Focus on the rooms you choose by adding Smart Room Sensors and setting a schedule, or let the sensors respond to your lifestyle. T10+ kits with EIM allow you to control more stages and IAQ products without running wires.

The T10 or T10+ Pro Smart with RedLINK® Room Sensor allows homeowners to prioritize comfort in the rooms that matter most, using time-based scheduling, motion detection or geofencing. Priority settings optimize comfort by using sensors in the areas of the house where people are.


  • Smart WiFi thermostat with RedLINK® technology
  • Color graphical LCD touchscreen display
  • Configurable daytime and nighttime backlight settings
  • Up to 3H/2C Heat Pump or 2H/2C Conventional
  • T10+ models can be used with Slab sensor
  • Up to 4H/2C Heat Pump or 3H/2C Conventional (T10+ with EIM)
  • Controls Humidification, Dehumidification, or Ventilation (all three with T10+ and EIM)
  • Demand Response Program availability
  • On-screen menus with familiar installer setup (ISU) steps
  • Optional geofencing
  • Flexible programming (7, 5-2, 5-1-1, 1, Off)
  • Location-based temperature control
  • Dual Fuel compatible
  • Utilizes the Resideo App
  • Works with Amazon Echo, Google Assistant, and more
  • ENERGY STAR® Certified
  • Supports WiFi 802.11 B/G/N 2.4 and 5 GHz
  • Dry contact alerts including system shut down with full drain pan alert


    T10+ Smart Thermostat Brochure

    Installation Instructions

    User Guide

    Submittal Sheet



    24 Vac systems Heat Pump, Conventional, Gas, Oil, Electric, Steam / Gravity Systems & Dual Fuel
    Dimensions (in.): 4.9" H x 3.7" W x 0.93" D
    Includes: T10+ WiFi Thermostat, UWP Mounting System, Decorative Cover Plate, Screws and anchors, Professional Install Guide, Getting Started Guide
    Electrical Ratings: 20 to 30 Vac
    Frequency: 50 Hz; 60 Hz
    Stages: Up to 3 Heat/2 Cool Heat Pump Systems, Up to 2 Heat/2 Cool Conventional Systems
    Electrical Connections: UWP Mounting System
    Operating Humidity Range (% RH): 5 to 90% RH, non-condensing
    Switch Positions (System): HEAT-OFF-COOL-AUTO-EM HEAT
    Switch Positions (Fan): AUTO-ON-CIRC-FOLLOW SCHEDULE
    Operating Temperature Range (F): 37 F to 102 F
    Network Communications: WiFi
    Power Method: Hardwired
    Ambient Temperature Range (F): 32 F to 120 F
    Display: Touchscreen
    Displayed Information: Indoor Temperature, Indoor Humidity, Menu Button, Down Button, Up Button
    Programmability: 7-Day Programmable, 5-1-1 Programmable, 5-2 Programmable, 1 Week, Manual / Not Programmed, Uses Sensors for Priority Scheduling, Geofencing
    IAQ Capability: Humidification, Dehumidification, Ventilation
    Energy Star Certified: Yes
    Display Size: 7.27 sq. in.
    Changeover: Auto or Manual
    Setting Temperature Range (F): Heat: 40 F to 90 F; Cool 50 F to 99 F