Programmable Thermostat

This replacement programmable thermostat is compatible with Resideo TH2110U4004 systems and equivalent models, offering reliable temperature control for single-stage heating and cooling applications. Engineered for conventional or heat pump systems without auxiliary heat, this unit supports 24 VAC operation across gas, oil, electric, steam/radiant, and hot water heating platforms. The thermostat features a user-friendly interface with a 4.84 square inch display area and compact dimensions of approximately 5.13 inches wide by 3.43 inches high by 1.19 inches deep, allowing for straightforward installation in standard wall cavities. Heating setpoint range spans 32 to 90 degrees Fahrenheit, while cooling operates between 50 and 99 degrees Fahrenheit, accommodating diverse climate control requirements. Power options provide operational flexibility with dual-voltage capability: 24 VAC connection using dedicated Rc and C terminals, or battery backup using two included AA batteries. This ensures continuous functionality during power interruptions. The unit maintains reliable performance across operating temperatures of 32 to 102 degrees Fahrenheit with humidity tolerance up to 90 percent non-condensing. Comprehensive terminal connectivity includes R, RC, C, W, O/B, W2-AUX, E, Y, Y2, G, and L/A terminals, enabling compatibility with various HVAC configurations. The white finish integrates seamlessly with standard residential and light commercial installations. Ideal for facilities requiring cost-effective thermostat replacement or upgrade, this unit delivers dependable single-stage climate control for commercial buildings, office spaces, and multi-unit properties. Installation is straightforward for qualified HVAC technicians familiar with standard thermostat applications.