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Hygro-Thermometer with Connectivity to ExView® App

Extech RH250W Hygro-Thermometer with ExView® App Connectivity

Smart, wireless environmental monitoring for comprehensive facility health insights.

The Extech RH250W is a compact, Bluetooth®-enabled hygro-thermometer designed for building inspectors, HVAC professionals, and facility maintenance teams who need to remotely view, track, and report on indoor air quality conditions. By simultaneously measuring ambient temperature and relative humidity, this smart device seamlessly transmits live environmental data directly to your smartphone or tablet via the free ExView® mobile app.

Whether you are continuously monitoring a sensitive server room, conducting a mold risk assessment, or evaluating HVAC system performance, the RH250W allows technicians to capture trends, set visual and audio alarms, and instantly generate field reports—all from a safe or convenient distance.

Key Technical Capabilities

  • Wireless Data Streaming: Pairs via Bluetooth® with the ExView® app (iOS and Android), allowing you to monitor real-time data from up to 90 meters (295 feet) away.

  • Scalable Diagnostics: The ExView® ecosystem allows technicians to connect and simultaneously view data from up to eight compatible 250W series meters on a single mobile device.

  • Instant Field Reporting: Easily export recorded data as CSV files or generate comprehensive PDF reports that include site photos taken directly from your connected smartphone camera.

  • Programmable Alerts: Configure custom high and low visual and audible alarms within the app to immediately notify you when environmental parameters breach safety or operational thresholds.

  • Essential Meter Functions: Features a bright backlit dual LCD display for standalone use, a Data Hold function to freeze active readings, and Max/Min recording to track peak fluctuations.

Technical Specifications Summary

ParameterMeasurement RangeBasic Accuracy
Relative Humidity0 to 100% RH±5% RH
Air Temperature-10°C to 60°C (14°F to 140°F)±1.0°C (±2.0°F)
Wireless RangeUp to 90 m (Line of Sight)via Bluetooth®

Bring wireless efficiency and modern data integration to your environmental diagnostics

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