The Testo 625 (0563 6251) Compact Thermo-Hygrometer has a humidity sensor, which measures the air temperature and humidity. It can also calculate the dew point and wet bulb temperature. The meter has a hold function that freezes the last reading, and powers off automatically to conserve battery power. A long-life humidity sensor ensures that you will get the best possible results for years to come, and the easy to read, backlit display shows min/max readings at the touch of a key.

The 625 Thermo-Hygrometer is ideal for monitoring production and storage conditions, and ensuring the quality of products, and the right indoor climate in archives and libraries. It is also excellent for detecting mold, or locating places at risk in buildings, and for monitoring the indoor climate in the workplace and in greenhouses.