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T4 Pro Programmable Thermostat, 1H/1C Conventional or 2H/1C Heat Pump + Aux. Heat
Brand: Honeywell
Part#: TH4210U2002
Honeywell/Resideo TH4210U2002 is a programmable digital thermostat designed for 1-stage heat/1-stage cool conventional or 2-stage heat/1-stage cool heat pump systems (with aux heat). T4 Pro sports a large backlit display w/ adjustable idle brightness, choice of multiple programmability modes, keypad lockout and selectable automatic or manual changeover. This thermostat is a great mid-range model for those who want all the conveniences offered by a programmable thermostat but without the more complex indoor/outdoor sensor connection, internet access or app installation.

  • Large, illuminated, easy to read display w/ adjustable idle brightness
  • Multiple programmability modes: 5+2 / 5+1+1 or 7-Day, as well as non-programmable
  • Pre-set program settings, can be temporary/permanently overridden
  • Adaptive Intelligent Recovery (optional setting) is an improved version or Early Start - the system optimizes start time to reach desired temperature by programmed time settings
  • Displays time, mode, ambient and setpoint temperature at the same time
  • Keypad lockout
  • Air filter change service reminders
  • Fahrenheit (F) or Celsius (C) display mode
  • Positive "Off" mode
  • Low battery warning indicator
  • 1°F temperature accuracy
  • Built-in compressor protection

Technical Specifications:
  • Programmability: Programmable, 5-2 Day, 5-1-1 Day, 7-Day, Non-Programmable
  • Stages: 1 Heat / 1 Cool Conventional or 2 Heat / 1 Cool Heat Pump w/ Electric Aux Heat (Gas/Oil/Electric Forced Air Heat / Heat Pump / Radiant Heat / Steam)
  • Changeover: Auto or Manual
  • Interface: Button
  • Display: Monochrome
  • Display Size: 3.93 sq in.
  • Mounting: Square
  • Color: White
  • Electrical Ratings: 24V (20-30 Vac, 0.02-0.50A or 0.02-1.00A - varies by terminal)
  • Power Method: Battery Only (2 x AA), Hardwired Only (terminals R & C) or Harwired with Battery Backup (terminals R + optional C)
  • Terminal Designations: R, RC, C, W, O/B, Y, G, L, and K
  • Dual Fuel: No
  • Setting Temperature Range: Heat 40°F - 90°F / Cool 50°F - 99°F
  • Ambient conditions: 37 to 102°F, 5 to 90% RH, non-condensing
  • Dimensions (Height x Width x Depth): 4.1" x 4.1" x 1.1" (103.6mm x 103.6mm x 28mm)
  • Packaged Weight: 14 oz

5-year warranty
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