Extech CO50 Carbon Monoxide 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.

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 in9 readings with recall function

Complete with Universal AC adapter (100V-240V) and multiple plug types (US, EU, UK, AUS)

Extech CO50 Carbon Monoxide 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.

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 in9 readings with recall function

Complete with Universal AC adapter (100V-240V) and multiple plug types (US, EU, UK, AUS)