Extech's Big Digit Hygro-Thermometer is a professional temperature and humidity meter, please follow the instructions in the user manual during use
This document is the user guide for the Extech 445703 Big Digit Hygro-Thermometer, a professional meter designed to measure temperature and relative humidity. The guide provides instructions in English and Spanish for setting up the device, selecting temperature units, and interpreting the dual displays for temperature and humidity readings.
| Temperature Range | -10 to 60°C |
|---|---|
| Humidity Range | 10% to 99% |
| Dimensions | 109 x 99 x 20mm |
Press and hold the RESET button for 1 second while in the MAX/MIN display mode.
Open the battery compartment by pushing the cover on the rear of the instrument downward, remove the old battery, and replace it with a 1.5V AAA cell.