Product review (3 stars): I would recommend looking for the the DewStop product part/model number
Panasonic FV-WCCS2-W tech docs says that the time and humidity level are both adjustable. I ordered two one from two different vendors. One was adjustable, the other wasn't. The problem is that the Panasonic FV-WCCS2-W model number got me the OEM DewStop FS-200 (not adjustable) and the OEM DewStop FS-325 (adjustable). To be safe, I would recommend looking for the the DewStop product part/model number, depending on the functionality you are looking for, and not the Panasonic FV-WCC2-W

Both work fine. The unit that is not adjustable works but fan will be on for 30 minute and the humidity is a fixed setting.  The adjustable unit took some tweaking to get it to a good humidity level (initially set it to be too sensitive so it was fighting with my whole house humidity system, this was not a problem with the fix settings unit), but I REALLY like that I can adjust the fan timer.