testo 623 - Hygrometer for measuring temperature and relative humidity

Order-Nr.  0560 6230

  • Alerts when room’s thresholds are reached

  • Large, easy-to-read display shows current the time and date and a 90-day statistic

  • Long-term stable sensor – for long-term, high-quality measurements

  • Table and wall mount available

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

Rs  19,860.00
GST and accessories extra

Product Description

The compact and elegant hygrometer 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 hygrometer – technical features
The testo 623 hygrometer is designed to monitor the indoor temperature and relative 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 aids you relying on your hygrometer for reliable readings for years to come.


Delivery Scope

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

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


ISO calibration certificate

Order Number: 0520 0006

Price on Request
DAkkS calibration certificate

Order Number: 0520 0246

Price on Request