17
Testing The Sensor
If testing the sensor for the first time after installation, or replacing a battery, make sure
that the alarm has completed the 3 minute warm up period and the LED is flashing green
once every minute, as carrying out a sensor test before this could give false readings.
CAUTION: All sensor testing should only be performed by a responsible adult.
This test should only be performed once a month. Excessive testing will cause the battery
life to be shortened.
NOTE: CO test kits may be used in order to avoid having to burn cigarettes, incense
sticks etc.
We suggest the use of an incense stick or cigarette as the inefficient way in which they
burn gives off a readable localized amount of CO. A readable level of carbon monoxide
will not be given off by other sources of smoke, for example an extinguished candle or
match.
Step 1:
If the alarm is wall mounted unhook it from the fixing screws.
Step 2:
Cover sounder vent with left thumb/finger (see previous diagram on opposite
page). Hold the Test/Reset button down for around six seconds until the Spray Can Icon is
visible.This indicates that the detector is now monitoring continuously for CO and may be
tested using a known source of CO.
Step 3:
Light a cigarette or an incense stick using a match or lighter. Extinguish the lighter, or put out the
match and place it into a dish of water.
