Review on 🌡️ Advanced Extech Digital Thermometer: Accurate Temperature Readings with Ease by Emmanuel Nguyen

I find this Extech hygrometer to be a very accurate device. I see a lot of negative feedback about its calibration, but I feel that the user is not using the correct tuning technique to calibrate this device. The humidity calibration knob is used to set the upper limit of the range. Place the sensor in a known 100% humidity environment. To do this, I placed a damp paper towel on the bottom of the jar, then pushed the sensor up into the jar and sealed the jar with tape. At constant room temperature, allow the sensor to acclimate for about an hour, then set the trimmer to 99%. This worked fine for me. Very accurate.