AP-T45 AP-T40FL Replacement Filter Compatible with 1461901 Homedics Air Purif…
(It’s also compatible with Costco 1461901, 1363711, 1356114, 1467939, 1472383. 6) Plug unit into a household electrical outlet, press the power button to turn on unit. Press and hold the ionizer ion button for 3s to reset the indicator.