T621-2 Single-Stage 2 Hot/1 Cold Non-Programmable Thermostat (White)

Compact, non-programmable T621-2 thermostat built for single-stage 2 Hot/1 Cold systems. Designed for easy use and clear readability, it combines basic controls with installer adjustments. Features: - 2 sq. inch display with blue back light for improved visibility - Glow in the dark light button for quick access in low light - Easy access battery compartment for fast battery changes - Configurable for Electric or Gas systems with separate B and O terminals - Independent heating and cooling swing (cycle rate) adjustments - Room temperature calibration adjustments for precise control