Check the listing for details. Pro1 IAQ T621-2 Multi-Stage Non-Programmable Thermostat. Color: N/A, Condition: New. Listed at 49.27 USD. Electrical HVAC Thermostats Thermostat Wire Tools Plumbing Pro1 IAQ T621-2 Multi-Stage Non-Programmable Thermostat The Pro1 IAQ T621-2 is a multi-stage non-programmable thermostat that can be either hardwired or battery powered. The T621-2 is a cost-effective thermostat that is easy to install and intuitive to use with a 1 heat / 1 cool conventional and 2 heat 1 cool heat pump system. Features 2 Sq. inch display Blue backlight Glow in the dark light button Electric or Gas configurable Separate B & O terminals Room temperature calibration adjustment Separate heating and cooling swing (cycle rate) adjustments 5 minute compressor delay protection (selectable on or off) Filter change indicator(selectable on or off) Simple private label badge system Easy wire color coded terminal blocks Universal sub-base Mounts on wall or junction box Battery or 24v power 2 year warranty Product Details Color Height 5.375 Length 5.500 UPC HVACSurplus.com works with a wide variety of brands that you know & trust. Some of our brands include: Aprilaire ∙ Belimo ∙ Braeburn ∙ CPS Products ∙ DiversiTech ∙ Ecobee ∙ Emerson ∙ Functional Devices ∙ GeneralAire ∙ Honeywell ∙ ICM Controls ∙ iO HVAC Controls ∙ Jackson Systems ∙ Johnson Controls ∙ Kidde ∙ LeakSmart ∙ Little Giant ∙ Lux ∙ Malco ∙ MA-Line ∙ NAVAC ∙ Nest ∙ Packard ∙ Peco ∙ Pro1 IAQ ∙ Ranco ∙ Rectorseal ∙ Resideo ∙ Ring ∙ Robertshaw ∙ SolderWeld ∙ Skytech ∙ Supco ∙ UEI Test Instruments ∙ Universal Secruity Instruments ∙ Vents US ∙ White-Rodgers