The Testo 625 thermo hygrometer is a compact handheld instrument with a built-in humidity probe head for measuring humidity, wet bulb temperature, or dew point as well as temperature. The probe head can be easily removed and attached to the handle via a probe cable or wireless transmitter, making it perfect for measuring air moisture in hard-to-reach areas.

The Testo 625 can be connected to the Smart App for instrument configuration, data graphing, measurement data saving, customer and site management, on-site documentation, and email report dispatch. Measurement range: 0-100% RH with ±2.5% accuracy, 0.1% resolution; temperature -20 to 60°C with ±0.5°C accuracy, 0.1°C resolution. Battery life: 100 hours.