The Cooper&Hunter 120N in addition to the features offered in the wired thermostat from Cooper&Hunter, this model is compatible with Air Handlers, Splim Ducts, Ceiling Cassettes, One Way Cassette, and Astoria with R410A Refrigerant, but now also all-new Cooper&Hunter units with R454B Refrigerant, and with SmartKit Bult-in has the ability to connect to the internet and provide compatible units with remote connectivity through the Cooper&Hunter App, allowing you to control your air conditioning on your smartphone or tablet, wherever you are.