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Air Quality Meter, 0 °C, 50 °C, 20% to 90%


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FM100   Datasheet
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20% to 90%




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Technical Docs (1)

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Product Overview

The FM100 from Extech Instruments is an indoor compact digital formaldehyde monitor with a tilting leg stand. It measures and alternatively displays formaldehyde concentration, air temperature and humidity with user settable alarm. The alarm feature alerts the user when the formaldehyde 0.08ppm limit is exceeded. This is perfect for monitoring indoor air quality of areas affected by formaldehyde gas. The FM100 can be wall mounted or used as a table top device. Formaldehyde is used in the manufacture of many industrial and consumer goods.
  • Bright tri-coloured LED indicator in ppm: green <0.08, yellow = 0.08 to 0.79, red = 0.80 and above
  • LCD alarm icon, LED turns red and loud audible beeper sounds when indoor CH2O level exceed set point
  • Selectable CH2O unit as ppm or mg/m3
  • ZERO re-calibration function
  • Manual temperature and relative humidity compensation (adjustable)
  • Designed with electrochemical CH2O sensor
  • CH2O calibration function in fresh air
  • Four display error codes for troubleshooting
  • Low battery indicator, recover to factory setting function
  • Product comes with 1 years warranty


Built-in stand, Side cover, Universal AC Adaptor (multi-plugs US, EU, UK and AU) and 4 AAA batteries.

Available for back order

More stock available to supplier lead times which is approximately 12/13/21

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