Extech RHT10 Humidity & Temperature USB Datalogger
The Extech RHT10 Humidity & Temperature USB Datalogger records environmental conditions over long periods with reliable digital storage. It connects directly to a computer through USB, allowing fast setup and easy data download. As a result, users can monitor humidity and temperature trends without complex equipment.
Furthermore, the Extech RHT10 supports flexible sampling intervals from 2 seconds up to 24 hours. This wide range allows accurate monitoring for short tests or long-term studies. With storage for 32,000 readings in total, the device can capture large datasets before data transfer is required.
Flexible Environmental Monitoring
In addition, the Extech RHT10 includes programmable high and low alarm limits for both humidity and temperature. These alerts help users identify conditions that fall outside acceptable ranges. The compact housing and USB interface make the device easy to install in offices, storage areas, laboratories and production spaces.
Clear Data Analysis and Dew Point Indication
The included Windows software helps users analyse recorded information clearly. Dew point indication is available within the software, giving useful insight into moisture conditions. This helps engineers and technicians evaluate air quality, condensation risk and environmental stability.
Finally, the Extech RHT10 is powered by a long-life 3.6 V lithium battery that can operate for around one year. Its compact size allows discreet placement while maintaining accurate measurements. Therefore it is well suited for HVAC monitoring, environmental logging and quality control checks.
Key Features
- USB datalogger designed for monitoring humidity and temperature conditions
- Stores up to 32,000 readings for extended monitoring periods
- Selectable logging intervals allow flexible recording from seconds to hours
- Simple USB connection allows quick setup and fast data download
- Compact lightweight design suitable for installation in small spaces
- User programmable alarm limits help detect environmental changes
- Windows compatible analysis software included with the device
- Dew point indication available through the supplied PC software
- Protective USB cap helps protect the connection during use
- Long battery life supports extended logging applications
- Designed for environmental monitoring, HVAC checks and storage monitoring
Technical Specifications
| Manufacturer | Extech Instruments |
| Manufacturer part code | RHT10 |
| Product type | USB humidity and temperature datalogger |
| Temperature range | -40 °C to 70 °C (-40 °F to 158 °F) |
| Temperature resolution | 0.1 °C / 0.1 °F |
| Temperature accuracy | ±1.0 °C (-10 to 40 °C) and ±2.0 °C (-40 to -10 °C and 40 to 70 °C) |
| Humidity range | 0 to 100 %RH |
| Humidity resolution | 0.1 %RH |
| Humidity accuracy | ±3 %RH |
| Total memory capacity | 32,000 readings |
| Temperature memory | 16,000 readings |
| Humidity memory | 16,000 readings |
| Logging interval | 2s, 5s, 10s, 30s, 1m, 5m, 10m, 30m, 1h, 2h, 3h, 6h, 12h, 24h |
| Interface | USB direct connection |
| Software compatibility | Windows 98, 2000, XP, Vista, 7 and 8 |
| Power supply | 3.6 V lithium battery |
| Battery life | Approximately 1 year typical use |
| Dimensions | 130 x 30 x 25 mm |
| Weight | 20 g |
Comparison Table
| Feature | Temperature Measurement | Humidity Measurement |
| Measurement range | -40 °C to 70 °C | 0 to 100 %RH |
| Resolution | 0.1 °C / 0.1 °F | 0.1 %RH |
| Accuracy | ±1.0 °C typical | ±3 %RH |
| Memory capacity | 16,000 readings | 16,000 readings |
| Monitoring purpose | Ambient air temperature monitoring | Relative humidity monitoring |




