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Get the most out of your home heating and cooling with the Honeywell THM5421R1021 Equipment Interface Module. This wireless, 2-wire module is compatible with Honeywell Home and certain THM5421 models, allowing you to control your heat pump, ductless mini-split system, central heating radiator, or packaged/rooftop air conditioner with ease. With one cool stage and a proprietary smart home protocol, this mini module is perfect for wall-mounted installation, and its gray plastic construction ensures it will complement any home decor.
Make your life simpler with the Honeywell THM5421R1021 Equipment Interface Module and experience the convenience of wireless control. Don't let the weather outside control your indoor climate - take control with Honeywell.
