Easy to use on drywall. There are no pins to poke holes in the wall. This gauge will either confirm or dispel your suspicions if you think you have damp walls.
Weather station hygrometer for home indoor household thermometer with humidity measurement ULBI H1
35 Review
Govee Temperature Hygrometer Thermometer Greenhouse
8 Review
Non-contact infrared thermometer GP-300
8 Review
Discover Hidden Thermal Changes with BLACK+DECKER TLD100 Thermal Detector
8 Review
Portable Handheld Manometer π for Accurate Pressure Differential Measurement
5 Review
π¬οΈ Advanced 3-in-1 Indoor Air Quality Monitor with CO2/RH/Temp Data Logging and Audible Alarm - NDIR Sensor Technology
8 Review
π Enhanced Precision with Backlit Professional Manometer for Differential Ventilation
6 Review
π₯ Advanced Testo Wireless Hot Wire Anemometer Technology
4 Review