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Extech RH250W: Hygro-Thermometer with Connectivity to ExView® App

by Extech

Simultaneously monitor relative humidity and temperature from a mobile device

For used and refurbished options, call 1 (770) 674-2489.

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  • Product Overview
  • Technical Specifications
  • Resources
  • Accessories
  • The RH250W is a compact hygro-thermometer with Bluetooth® connectivity, which allows building and maintenance professionals to view and share relative humidity and temperature data directly from a mobile device using the free ExView app. With the capability to capture data, display trends, set visual and audio alarms, and send reports, users can gain deeper insights on equipment and building health.

    • Measure relative humidity and air temperature simultaneously
    • Transmit, view, and share data directly from a mobile device via Bluetooth connection to the ExView app
    • Record Max/Min readings
    • Freeze display with 'Data Hold'
    • Save battery life with Auto Power Off feature
    • Mount on tripod with standard 1/4"-20 mounting screw
    • View data on both the bright, backlit RH250W LCD display and from the app on iOS® or Android™ mobile devices (offers both day mode and dark mode)
    • Connect up to eight compatible Extech Connected 250W Series meters to the app simultaneously
    • Set up data recording and program high/low audible alarms through the app
    • Export data in .CSV file format or send PDF reports—including photos of the measurement location—from the app
    • Comes complete with 3 AAA (1.5 V) batteries
  • Specifications Range Max Resolution Basic Accuracy
    Relative Humidity 0 to 100% RH 0.1% RH ±5% RH
    Air Temperature -10 to 60°C (14 to 140°F) 0.1°C (0.2°F) ±1.0°C (±2.0°F)
    Response Time 1 sec
    Connectivity Bluetooth (Free ExView App)
    ExView App Compatibility iOS 13.0 and higher & Android 9.0 and higher
    Transmission Distance <10 m up to 90 m line of sight
    Power 3 x AAA (1.5 V) battery (included)
    Operating Conditions 0 to 40°C (32 to 104°F), ≤80% RH
    Dimensions 5.9 × 2.1 × 1.1 in (150 × 53 × 28 mm)
    Weight 2.8 oz (80.5 g)

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