Stay safe when heat soars. This slim sensor pen checks air temperature, humidity, and heat index in real time. Two clear lines on its display show data at a glance. Therefore you can act fast and dodge heat fatigue with the Extech RH25.
Precise Climate Insight
Moreover the Extech RH25 tracks wet bulb and dew point so you see the full climate story. It senses heat index up to 205 °C yet also reads icy zones down to −46 °C. In the same moment it keeps relative humidity accuracy within three percent. Thus it matches lab grade tools in a shirt pocket.
Built for the Field
For outdoor sport, site work, or patrol the Extech RH25 takes rough use. Its moulded shell shrugs off dirt while the recessed sensor cap guards the probe. Meanwhile the CR2032 cell powers many sessions. When power runs low the simple design lets you swap batteries in seconds.
Finally sliding the Extech RH25 into any pocket is easy thanks to its 140 mm length and 50 g weight. Even with gloves you can press one button and change from °C to °F fast. Hence every team member reads the same figures and acts with confidence. Choose this pen and move with heat-smart control.
Key Features
- Extech RH25 displays live heat index readings
- Calculates wet bulb temperature in one step
- Shows WBGT to guide safe outdoor training
- Reads dew point for precise storage control
- Measures air temperature from minus four to 122 Fahrenheit
- Captures humidity across the full zero to ninety nine point nine range
- Accuracy within three percent RH supports quality checks
- Compact 140 millimetre pen weighs only fifty grams
- Single CR2032 cell powers the sensor without cables
- CE certified build passes strict European standards
