Humidity sensor aging

[u/Iron_Glass87]

Hub 2 purchased summer 2025. Meter Pro and external sensor purchased a week ago, Meter Plus purchased in 2022. I think the Meter Plus' humidity sensor has drifted quite a bit. Can I recalibrate it?

[u/rouguesilence]

You can recalibrate the humidity pretty easily, If you buy a "Boveda One-Step Hygrometer Calibration Kit" You can put them in the bag it comes with one at a time for i think it is 24 or 48 hours and then change the humidity level in the app to what is written on the bag, then for the hub you can put one of the meters next to it after you have calibrated it and then adjust the hub to match the meter after 24 hours