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The Extech 44550 is a dual LCD tester that can measure both relative humidity and temperature at the same time.
Shaped like a pen, the 44550 is comfortable to hold and requires the user to hold the sensor near to an application in order to measure the two available parameters. The tester can measure relative humidity from 10 to 85% and temperature levels from 14 to 122°F (-10 to 50ºC).
On the front of the tester are also a selection of buttons that can be used to switch between Celsius/Fahrenheit modes and to active MAX/MIN measurement modes.
|Specifications||% Relative Humidity||Temperature|
|Range||10 to 85%||14 to 122ºF (-10 to 50ºC)|
|Basic Accuracy||± 5%||± 2ºF/1ºC|
|Resolution||1%RH||0.1ºC or ºF|
|Sensor Type||Resistive ceramic||Thermistor|
|Power||One LR44 button battery|
|Dimensions||5.9 x 0.8 x 0.7” (150 x 20 x 18mm)|
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Review by Swan (Posted on 16/06/2014)
A little slow but accurate.
Review by JOSEPH (Posted on 28/11/2013)
This thermo/hygrometer is not as responsive as the 445580 though does give accurate measurements. The instructions are clear and easy to read. The build quality though not bad is not something impressive. For example the clip on the pen looks like it might snap if spread too far. All in all, it's not bad and is convenient and discrete for taking out and about.
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