The Extech RHT20 is a compact and versatile digital hygro thermometer designed for accurate measurement of temperature, relative humidity, and dew point. This handheld instrument combines reliability, convenience, and essential features to provide comprehensive environmental monitoring capabilities for professionals in industries such as HVAC, agriculture, and indoor air quality assessment.

The Extech RHT20 features built-in sensors for measuring temperature and relative humidity. It offers a wide measurement range for both parameters, allowing users to assess the environmental conditions accurately. Additionally, it calculates the dew point, which is the temperature at which condensation occurs, providing valuable information about moisture levels in the air.

Equipped with a clear LCD display, the RHT20 shows real-time temperature, relative humidity, and dew point readings simultaneously, enabling easy monitoring and analysis of environmental conditions. It may also include additional features such as a data hold function for freezing the measurement reading, a minimum and maximum value tracker, and programmable high/low alarms for temperature and humidity thresholds.

The hygro thermometer is typically battery-powered and offers a compact and portable design, allowing for versatile placement and use in various environments. It may also offer data logging capabilities, allowing for the storage of measurement data over time for further analysis.

The Extech RHT20 is suitable for a wide range of applications, including HVAC system evaluations, building inspections, agricultural monitoring, and indoor air quality assessments. Accurate and reliable measurements of temperature, relative humidity, and dew point are crucial for ensuring comfort, identifying potential issues, and maintaining optimal conditions in various environments.