Programmable Thermostat

This replacement thermostat is compatible with the Resideo TH1110DV1009 and functions as a vertical non-programmable control device ideal for residential HVAC applications. Designed for single-stage heating and cooling systems, this unit accommodates conventional air conditioning and heat pump configurations without auxiliary heat functionality. The thermostat features a backlit LCD display measuring 1.32 square inches with integrated push-button controls for convenient operation and visibility in various lighting conditions. Operation is straightforward through simple slide switches governing heat, off, and cool modes, along with fan settings that include an automatic mode option. The display provides clear visual feedback, indicating whether heating or cooling is actively engaged. This thermostat supports dual-power operation, accepting either hardwired 20-30 VAC input or battery backup using two AAA batteries, ensuring reliable performance in both powered and emergency situations. The manual system changeover switch allows operators to transition between heating and cooling modes without programming requirements. With its uncomplicated interface and dependable functionality, this replacement thermostat serves as an economical solution for property managers, HVAC contractors, and facility maintenance personnel seeking reliable temperature control without complex programming demands. The non-programmable design makes it suitable for applications where consistent, simple temperature management is prioritized over advanced scheduling features.