Resideo - Honeywell Home TH4110U2005 Thermostat

The TH4110U2005 Thermostat from Resideo (Honeywell Home) delivers flexible control for modern homes. This programmable thermostat supports 5-1-1/5-2/7 day programming for both Heat Pump and Conventional systems with Auto/Manual Changeover.

Featuring a large 3.93-square-inch display and a compact form factor, it operates on low voltage (20–30V AC) with a relay output for reliable heating and cooling control. The setting range covers 40–90°F (heat) and 50–99°F (cool), with an ambient operating range of 32–120°F.

Its versatile configuration supports 1-Heat/1-Cool for both heat pump and conventional systems, Auto-On Fan and Heat-Off-Cool switching to match your comfort schedule.

• 5-1-1/5-2/7 day programmable or non-programmable modes for custom schedules
• Auto/Manual changeover for seamless climate transitions
• Large display for quick readings and easy adjustment
• Low-voltage (20–30V AC) operation with relay output
• Wide system compatibility: Standard/High Efficiency Gas, Oil, Electric Forced Air, Hot Water, Geothermal, and Air-to-Air Heat Pumps