testo 623 - Ambient Climate Meter 

Order-Nr.  0560 6230

incl. GST $326.70
  • Histogram shows measurement values of last 90 days 

  • All important values at a glance 

  • Large, easily legible display 

  • Analysis of past temperature and humidity measurement values directly on site 

The elegantly designed testo 623 Ambient Climate Meter 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 Description

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 Ambient Climate Meter – technical features

The testo 623 Ambient Climate Meter 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.

The large, easy-to-read display shows a variety of information including the last reading, the time and date and a 90-day statistic. This statistic allows you to carry out a long-term analysis of the indoor temperature or humidity of the room without first having to access your computer.

The long-term stable sensor guarantees long-term, high-quality readings. You know you can rely on your meter to provide you with reliable readings for years to come.

The elegantly designed testo 623 Ambient Climate Meter fits seamlessly into any environment. It can be placed on a desk or table like a digital photo frame or fixed to a wall. A table and wall mount are both included. 

Delivery Scope

testo 623 thermohygrometer, batteries, protocol certificate, wall and table mount.


Technical Data

Temperature - NTC

Measuring range

-10 to +60 °C


±0.4 °C


0.1 °C

Humidity - Capacitive

Measuring range

0 to 100 %RH*


±2 %RH + 1 Digit at +25 °C (10 to 90 %RH)

±3 %RH Remaining Range


0.1 %RH

* Not for condensing atmospheres. For continous use in high humidity (>80 %RH at ≤30°C for >12 h, >60 %RH at >30°C for 12 h), please contact us via our website. Please see the additional accuracy information for humidity in the instruction manual.

General technical data


240 g


185 x 105 x 36 mm

Operating temperature

-10 to +60 °C

Measuring rate

20 s

Product-/housing material


Protection class




Battery type

4 x type AA batteries

Battery life

12 Months

Storage temperature

-20 to +60 °C



DAkkS calibration certificate

Order Number: 0520 0246

ISO calibration certificate

Order Number: 0520 0076

incl. GST $326.70