humidistat
/ˌhjuːmɪˈdɪsteɪt/Definitions
1. noun
A device used to measure and control the humidity level in a given environment.
“The air conditioning technician set the humidistat to maintain a comfortable humidity level in the office.”
2. verb
To adjust the humidity level in a given environment using a humidistat.
“She humidistated the room to prevent mold growth.”