After printing a basic set in PLA, I noticed a significant drop in humidity inside the AMS unit. I highly recommend installing these in your printer. Two months later, I purchased a rectangular humidity and temperature reader from the Bambu website and reprinted just the front‑centre unit. The premade space fit the reader perfectly. I’ve now printed the full set, including the spool units, and so far I’ve found that spools with low filament remaining move more smoothly than before. Thank you for the excellent design.