Description Part of Honeywell/Resideo’s contractor-friendly T Series, the T4 Pro TH4210U2002 delivers straightforward comfort control in a compact, familiar footprint. Its intuitive interface simplifies installation and daily use, while flexible staging supports a wide range of residential HVAC systems. Key Benefits Versatile compatibility Controls up to 2 Heat / 1 Cool heat-pump systems or 1 Heat / 1 Cool conventional equipment. User-friendly programming Clear menus and push-button navigation make it easy for homeowners to create energy-saving schedules. Standardized mounting The UWP™ universal wall plate speeds change-outs and keeps wiring consistent across the entire T Series. Adaptive Intelligent Recovery (AIR) Learns run-times and starts early so the space reaches setpoint at the exact schedule time—better comfort, no extra programming. Auto or manual change-over User (or ISU) can let the stat switch between heat & cool automatically on shoulder-season days, or lock modes for testing/balancing. Wire-saver & rich terminals R, RC, C, W, O/B, Y, G, L plus “K” terminal allow the THP9045 wire-saver module—handy when the C-wire is missing. Contractor-grade design Sturdy construction, battery-or-C-wire power options, and easy-access terminals reduce installation time and callbacks. Seamless aesthetics A slim profile and included decorative cover plate hide drywall marks for a clean, professional finish. Other Features: Wide operating envelope Designed for 37 – 102 °F ambient & 5 – 90 % RH (non-condensing)—safe for attics, garages, and unconditioned closets. 5-year Honeywell warranty Long coverage and nationwide parts availability reassure contractors and property managers alike. What’s in the Box? T4 Pro thermostat UWP™ mounting system Standard J-box adapter Decorative cover plate (121 mm × 121 mm × 9 mm) Screws, anchors, and 2 AA batteries Installation instructions and user guide
