Useful in industries such as Mold Remediation, Water Damage Restoration, Flooring etc. where monitoring of relative humidity in the environment is important. This pocket size, fast reacting (approx 60 secs) Hygrometer measures Temperature, -20º C to 50º C (14º F to 120º F). Relative humidity 5% to 95% with Dewpoint, Min/Max and built in sensor probe.