The Extech RHT30 is a compact, easy-to-use USB datalogger that records up to 24,000 readings each for relative humidity (0.1 to 99.9% RH) and temperature (–22 to 158°F / –30 to 70°C). Designed for environmental monitoring in storage facilities, laboratories, greenhouses, and HVAC applications, it features a user-programmable sampling interval (30 seconds to 2 hours), password-protected security, 6-language support, and an 8-location bookmark function. Data is transferred directly to a PC via built-in USB, automatically generating time-stamped PDF or Excel® reports with trend graphs. A large 5-digit LCD and color-coded LED provide real-time status, while Max/Min tracking and long battery life (approx. 3 months) enhance usability.
- Records 24,000 humidity and 24,000 temperature readings (48,000 total)
- User-selectable sampling interval: 30 sec, 1/2/5/10/30 min, 1/2 hr
- Built-in USB connector for direct PC data download—no cables needed
- Automatically generates PDF or Excel® reports with timestamped data and trend graphs
- 5-digit backlit LCD with battery indicator
- Smart LED provides color-coded status for RH and temperature
- Max/Min recording for all parameters
- 6-language menu, programmable alarms, start/stop logging, and 8-location bookmarks
- Password-protected security login
- Includes 2 CR2032 batteries, USB cover (doubles as stand), wall-mount screw, and hanger