The Halo-LED cannot be wired directly to the EAC terminal, doing so will damage the unit and void the warranty. Installation by a Licensed Electrical or HVAC Professional is Recommended. RGF DOES NOT WARRANTY THIS PRODUCT. Contact Your Distributor for Warranty Support. HVAC units with a variable speed fan motor must use the INCLUDED air sensing kit (RGF part #HLED-AS) The Included Air Sensing kit (HLED-AS) can be used for all installations, without exception The industry first LED in-duct system. The Halo-LED cannot be wired directly to the EAC terminal, doing so will damage the unit and void the warranty.