Extech RH490 Meter for Precise Temperature and Humidity Data

The Extech RH490 Precision Hygro-Thermometer delivers highly accurate environmental measurements, combining advanced temperature and humidity sensing in a durable, professional handheld design. It measures temperatures from –30°C to 100°C and humidity from 0 to 100% RH, making it ideal for HVAC diagnostics, laboratories, cleanrooms, and industrial quality control. Its fast-response sensor ensures reliable real-time readings, while the large backlit display enhances visibility in low-light conditions. The device includes data hold, min/max, and programmable alarms for enhanced monitoring. A robust housing and ergonomic grip support long-term field use. With strong precision and user-friendly operation, it is an essential tool for accurate environmental assessment.