• Rugged case and electronics
• Large LCD displays CO levels from 0 to 1000 ppm
• Bright back-light allows easy screen viewing under dim lighting conditions
• Beeper triggers with increasing frequency as CO levels rise 
• MAX Hold function stores and displays the maximum CO level
• Automatic sensor zeroing and self-test sequence upon start-up
• CO level beeper can be silenced if desired
• Automatic power-off after 20 minutes extends battery life
• Easy to replace battery
• Replaceable sensor extends tool life
• C50 soft carrying case, battery and instruction sheet
• Stabilized electrochemical CO specific sensor
• Typical two year sensor life; one year calibration cycle
• Battery life typical 500 hours with alkaline battery
• Updated sensor

Models: Fluke CO-220 Carbon Monoxide Meter