Comfort at its best!The wall units are ready to receive the USB key to use the optional Wi-Fi.MSAE-HRFN1 ModelsMSAEB-09HRFN1-MT0W, 20 SEER, 9k Btu/HMSAEB-12HRFN1-MT0W, 20 SEER, 12k Btu/HMSAED-18HRFN1-MT0W, 22 SEER, 18k Btu/HMSAED-23HRFN1-MT0W, 20 SEER, 24k Btu/H
