Buyers should thoroughly examine the installation and wiring instructions depicted in the images before buying. It is recommended to exercise caution if you lack experience in installation to avoid potential problems like product malfunction or incompatibility due to incorrect purchases. (If you have any questions, please feel free to contact us).

【Compatible Systems】Single-Stage and 2-Stage Gas/Oil/Electric Furnace (Heat only) , Boiler Radiant (Heat only), Furnace Forced-Air (Heat Only), Gas Fireplace (24 Volts) and 2-Stage Cooling.

【Incompatible Systems】Does Not Work: HVAC Central Air Conditioner Heat Pump System (with Auxiliary or w/o Auxiliary Heating); Dual Fuel/Hybrid Multistage Heating; Mini Split Systems, RV; Convectors; Radiant Ceiling Heat; Electric Baseboard Heat ( 120-240 Volts)

Heagstat H715 5-1-1 day programmable thermostat for home conventional single or multistage systems up to 2 Heat/ 2 Cool. (Separate programs for the weekdays and weekends with 4 program periods per day including wake, leave, return and sleep).

Accurate temperature control of +/-1-Degree F for consistent comfort, Room temperature display range: 41°F to 95°F, Temperature control range: 44°F to 90°F.

Separate Heating and Cooling Swing (Cycle Rate). Which will Either Prolong or Shorten the Temperature Open Time. Make Comfortable Temperatures to Teduce Energy Usage, Savings on Annual Heating and Cooling Costs.

Support room temperature error display calibration adjustment and 5 minute compressor delay protection (Selectable on or off), with air filter change reminder and low battery indicator available (Tip: Please replace the accessories in advance).

Support Dual Powered 24VAC Power or 2 AAA Batteries. No Common Wire (c-wire) Rrequired on Most 24V Conventional Single-Stage Systems. ( Notice: Only Required on Heat Only and Cool Only Systems ).

3 Inches Display with white Backlight, Easy-to See and Read. Large, Clear Backlit Digital Display, Very Suitable for Middle-Aged and Elderly People.

After-sales Service: If you have any problem, please feel free to contact us, we will repley you in 24 hours. the products come with 30 days free return, 2-year Worry-Free Warranty.