Testo 625 - Humidity/Temperature

incl. plug-in humidity probe head, battery and calibration protocol
Part number: 0563 6251
Manufacturer: Testo
£175.00 (ex VAT)

The compact instrument with built-in humidity probe head for measuring air moisture and temperature. The large 2 line display shows humidity, wet bulb temperature or dewpoint as well as temperature. When measuring at hard-to-access points, the humidity probe head can be easily removed and attached to the handle via the probe cable (accessory). Alternatively, the readings can be transmitted wirelessly over wide distances from the probe to the measuring instrument. To do this, the humidity probe head is attached to the radio handle (accessory) and the radio module (accessory) is added to testo 625.

  • Displays temperature and relative humidity / wet bulb temperature / dewpoint
  • Max./min. values
  • Hold button to freeze readings
  • Display light
  • Auto Off function
  • TopSafe, the indestructible protection case (optional)
  • Patented humidity sensor
  • 2 year guaranteed long-term stability
  • TopSafe, instrument protection against dirt and knocks (optional)

Storage temperature

-40 to +85 °C

Operating temperature

-20 to +50 °C

Battery type

9V block battery, 6F22

Battery life

70 h (without radio operation)


195 g


182 x 64 x 40 mm



Probe - NTC

Meas. range

-10 to +60 °C


±0.5 °C


0.1 °C

Probe - Type K

Meas. Range

-200 to +1370 °C


0.1 °C

Probe - humid. sensor, cap.

Meas. Range

0 to +100 %RH


±2.5 %RH (+5 to +95 %RH)


0.1 %RH

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