Fast electrochemical sensor helps you find CO sources like cracked heat exchangers or breached flue stacks.
Calibrate to ambient quickly with ZERO button.
Audio and visual alarms (with MUTE function).
Alarm rate increases as carbon monoxide concentration increases.
MAX hold to help you zero in on the source.
Bright-blue backlit dual-display to test in dark crawl spaces.
Magnetic hanger for hands free testing.
Auto Power Off (APO) to save battery life (easy to disable).
Battery check with % of battery life left displayed.
Use with optional AOXP2 pump for flue gas testing.