Testo 635-1 Digital Thermohygrometer

Technical specifications:

The Testo 635-1 Digital Thermohygrometer is the ideal instrument for measuring mold on ceilings and walls, as it has an optional connection temperature / humidity probe and an optional surface temperature probe, which allow calculating, automatically, the dew point distance.

This device also stands out because it allows the connection of wired probes, as well as the connection with wireless probes, capable of transmitting data over distances of up to 20 meters by radio, avoiding the inconvenience of using cables.


Among other features of the Testo 635-1 Digital Thermohygrometer, the following can be mentioned:

- It allows to determine and analyze the humidity in the environment, as well as the humidity in materials, the U value and the dew point, even in compressed air systems,

- It is ideal for monitoring ambient humidity, temperature and dew point in homes, warehouses, production rooms, servers and museums,

- Allows to connect up to 2 pluggable probes and up to 3 wireless probes,

- It allows configuring various user profiles, in order to facilitate their use,

- It allows to visualize the minimum, maximum and average values,

- It has the Hold function, to display the last measured value on the screen,

- It has dimensions of 220 mm long x 74 mm wide x 46 mm high,

- Its weight is 428 grams,

- It uses alkaline AA manganese batteries, which give it an autonomy of up to 200 hours,

- It has a temperature measurement range from -40 ° C to 150 ° C, with an accuracy of ± 0.5% of the measured value,

- It has a humidity measurement range that goes from 0 to +100% RH,

- Its pressure measurement range is from 0 to 2,000 hPa,

- The order includes, in addition to the Testo 635-1 Thermohygrometer, 4 AA batteries and the equipment calibration protocol.