Testo 623 – Thermohygrometer

The elegantly designed testo 623 thermohygrometer provides you with a quick and convenient means of measuring the temperature and humidity in offices, living spaces and commercial premises and logs the readings over a period of 90 days.

Product benefits:

  • Measures the temperature and humidity in the room and alerts the room’s occupants when thresholds are reached
  • Large, easy-to-read display: shows the current reading and provides you with an at-a-glance 90-day statistic snapshot
  • Long-term stable sensor – for long-term, high-quality measurements
  • Table and wall mount included

SKU: 0560 6230.

The compact and elegant thermohygrometer is designed to grace any desk, table or wall and provides you with constantly reliable temperature and humidity readings in offices, living spaces or commercial premises.

The testo 623 thermohygrometer – technical features

The testo 623 thermohygrometer is designed to monitor the indoor temperature and humidity accurately and reliably. User-defined settings allow you to determine the length of the intervals between measurements – from 5 minutes to 24 hours. The readings are saved automatically over a period of 90 days and an alarm alerts the room’s occupants when a threshold has been reached.

  • testo 623 thermohygrometer
  • batteries
  • calibration certificate
  • wall and table mount

Measuring range

-10 to +60 °C


±0.4 °C


0.1 °C

Testo 623 – Download