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Data Sheet | Instruction Manual
Testo 608-H1 Indoor Thermohygrometer with Dew Point Calculation
The Testo 608-H1 thermohygrometer is a high-precision measurement instrument designed for continuous indoor climate monitoring. Equipped with a high-stability capacitive humidity sensor and an accurate NTC temperature probe, it provides real-time data on ambient temperature, relative humidity, and dew point. Its large, clear two-line display allows for effortless reading of current, minimum, and maximum values from a distance. The unit features versatile hanging and standing brackets, making it suitable for both wall-mounted and desktop operation in various professional environments.
Industrial & Laboratory Applications
- Indoor Climate Audit: Reliable tracking of ambient variables in offices, commercial spaces, and residential living areas to ensure occupant comfort.
- Storage and Archive Protection: Continuous monitoring of humidity levels in warehouses, document archives, and libraries to prevent mold and moisture-related damage.
- Laboratory & Research Environments: Precision verification of climate conditions in experimental setups, testing labs, and garden centres.
Technical Characteristics
| Sensor Architecture | 1x internal NTC temperature probe, 1x internal capacitive humidity sensor |
| Temperature Measuring Range | 0 to +50 °C (NTC element) |
| Humidity Measuring Range | 10 to 95 %RH |
| Dew Point Range | -20 to +50 °Ctd |
| Temperature Accuracy | ±0.5 °C (at +25 °C) |
| Humidity Accuracy | ±3 %RH (10 to 95 %RH); stability ±1 %RH per year |
| Measurement Refresh Rate | 18 seconds |
| Power Management | 9V block battery (6F22); battery life approx. 1 year |
| Housing Construction | Robust ABS plastic; dimensions: 111 x 90 x 40 mm; weight 168 g |
Package Contents
- Testo 608-H1 thermohygrometer unit
- 1x 9V block battery
- Factory calibration protocol and user documentation