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Extech 44550 Pocket Humidity/Temperature Pen

Extech 44550 Pocket Humidity/Temperature Pen
sku: 44550
MPN: 44550

  • Pen-shaped
  • Measures RH and temperature at same time
  • Pocket sized

Was: £30.92
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£24.18 Incl. VAT £29.02
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Extech 44550 Pocket Humidity/Temperature Pen Details

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.

Extech 44550 Pocket Humidity/Temperature Pen Key Features

  • Dual LCD display shows relative humidity and temperature measurements at the same time
  • Temperature is Celsius/Fahreneheit switchable
  • Built-in sensors
  • Pocket sized pen shape/li>
  • Clear function erases MAX/MIN values

Full List of Products Included

  • Extech 44550 Pocket Humidity/Temperature Pen
  • Pocket Clip
  • 1 x LR44 Button Battery
Technical Specs

Part Code: 44550

Extech 44550 Technical Specifications

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)  
Weight 0.7oz (20g)  

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Thermo/ Temperature Pen.

Review by Swan (Posted on 16/06/2014)


A little slow but accurate.

Nice discrete unit.

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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