Thermostat for Home, Premium Heat Pump Room Temperature Controller, up to 2H/1C, Easy-to-Read Large Display，Blue Backlight

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About This · High Compatibility: Heat pump multi-stage systems or conventional single-stage systems, Forced air (gas, oil or electric), Electric furnace, Hot water steam or gravity radiant heat, Heat only systems, Heat pump w/o or with auxiliary or emergency heat, Millivolt conventional systems, Gas fireplaces (24V), Floor or wall furnaces, Cool only systems.(TIP: Before purchasing, check to see if this thermostat is compatible with your system.) · Not Compatible: Two transformer systems, Conventional multi-stage systems, Dual fuel/hybrid heating, Electric baseboard heat (110-240 volts), Line voltage, Convectors, Radiant-ceiling heat, Mini split systems and 12V RV systems. · Easy to Install and Use: Large terminal blocks with universal sub-base, can be installed within 30 minutes, Large, clear, easy-to-read backlight LCD display and easy controls make for a user-friendly experience. · Simple but Powerful Control: Easy-access front-load battery compartment, adjustable temperature differential (swing) for energy optimization and maximum system life, Support temperature display calibration, Convert °C/°F units, compressor delay protection (selectable on or off). · Reliability: Made by professional manufacturer and backed by over 20 years of experience, the customer service is 7*24 hrs available. Overview Brand : Coiiwsei Model Name : RTH721-Blue Product Dimensions : 1.02"D x 5"W x 3.82"H Controller Type : Push Button Special Feature : Battery Powered or Hardwired Show more