The Watchman AJ-835Y alarm is a 10-year battery-operated, standalone Carbon Monoxide (CO) alarm. CO
is a colourless, odourless and tasteless poison gas that can be fatal when inhaled. CO is the product of
incomplete combustion and can come from any fuel-burning appliance that is malfunctioning or improperly
installed such as a blocked chimney or flue, gas range grill or stove, fireplaces, etc.
