Extech CO50: Desktop CO (Carbon Monoxide) Monitor

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Measures Carbon Monoxide concentration, Air Temperature and Humidity

The CO50 is a desktop CO Monitor which measures and displays carbon monoxide concentration, air temperature and humidity simultaneously. The CO50 features visibly bright LED lights which indicate active monitoring (green) or a surpassed CO alarm threshold (red). The meter also features an extra loud audible beeper alarm, electrochemical CO sensor, record/recall Max reading for CO concentration and CO calibration function in fresh air. Product is complete with Universal AC adapter (100V-240V) with multiple plug types (US, EU, UK, AUS) and a user’s manual.


Desktop CO (Carbon Monoxide) Monitor Features

  • Simultaneously displays Carbon Monoxide (CO) concentration, Air Temperature, and Relative Humidity readings with date (Year, Month, Day) and time
  • Visibly bright LED indicates active monitoring (green) or surpassed CO alarm threshold (red)
  • Extra loud audible beeper alarm level meets UL 2013 Standard (>85dB @ 3 meters); default alarm threshold at 30ppm (user adjustable)
  • Designed with Electrochemical CO sensor
  • Record/Recall Max reading for CO concentration
  • CO calibration function in fresh air
  • Internal memory for manually storing up to 99 readings with recall function
  • Complete with Universal AC adapter (100V-240V) and multiple plug types (US, EU, UK, AUS)

For complete specs please download the product datasheet (not available for some accessories)

Desktop CO (Carbon Monoxide) Monitor Specifications

Specifications range resolution basic accuracy
Carbon Monoxide (CO) 0 to 999ppm 1ppm ±2ppm
Temperature (Air) 14 to 140°F (-10 to 60°C) 0.1°F/°C ±1.2°F/0.6°C
Relative Humidity 10 to 90%RH 0.1%RH ±5%RH @ 25°C
Dimensions/Wt 6.1 x 3.4 x 3.2″ (155 x 87 x 81mm)/ 5.8oz (165g)

Desktop CO (Carbon Monoxide) Monitor Downloads

English Datasheet
English User’s Manual
French User’s Manual
German User’s Manual
Italian User’s Manual
Portuguese User’s Manual
Spanish User’s Manual
Chinese User’s Manual

Additional information