A bedroom or a room remote from a fuel burning appliance, see Figure 3
Mount the CO alarm relatively close to the breathing zone of the occupants. Whatever position you
choose, make sure it is possible to view the three LED indicators, when in the vicinity of the alarm.
Warning! A CO alarm should not be used as a substitute for proper installation, use and main-
tenance of fuel-burning appliances, including appropriate ventilation and exhaust systems.
Warning! Your CO alarm is intended for use in ordinary indoor locations of family units. It is not
designed to measure compliance with OSHA commercial or industrial standards.
Testing
Frequent testing of the system is a requirement to ensure its continued and safe operation. To
test the CO alarm, press the test/hush button. The green LED will blink, and the horn will ramp
up to full sound to indicate the alarm is operating correctly. The orange and red LEDs on the
Visit receiver will blink alternately, and it will it start to sound, ash or vibrate depending on
the receiver.
Guidelines and best practices for testing
1 After the system is installed.
2 Once monthly thereafter.
3 After prolonged absence from the dwelling (e.g. after a holiday period).
4 After repair or servicing of any of the systems elements or household electrical works.
Warning! To reduce the risk of carbon monoxide poisoning, test alarm operation when not in
use for 10 days or more.
Silencing (Hush)
When the alarm sounds, after sensing CO, pressing the test/hush button will immediately
silence the alarm (the red LED will continue to blink). If CO is still present, the red LED and
sounder will activate again after about 4 minutes. The alarm can only be silenced once during
a CO incident. At levels > 250ppm CO, the alarm cannot be silenced.
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Monitoring
The CO alarm will self-check (monitor) itself and give a status update every 50 seconds if there
are any problems. The status of the alarm can also be checked on demand by using the test/
hush button. The Signal pattern table shows the status response to both the selfcheck and
on demand testing. If the alarms are indicating a fault, pressing the test button will silence the
beeps for a 24-hour period. This is for your convenience and can only be done once.
Maintenance
Clean the outside housing by occasionally wiping with a clean damp cloth. Do not use any
cleaning agents, bleaches, detergents or polishes, including those in aerosol cans. Avoid
spraying air fresheners, hair spray, paint or other aerosols near the CO alarm. Do not place air
fresheners near the unit. Use the narrow nozzle of a vacuum cleaner to remove u and other
contamination from the cover slots and gas entry holes.
Caution: Do not paint the CO alarm. Remove the CO alarm when decorating. Do not allow
water or dust to contaminate the alarm.
Warning! Do not open or tamper with the CO alarm. There are no user serviceable parts inside
and this can damage the alarm.
Battery replacement
If the alarm indicates a yellow blink with a single beep, remove the alarm from the mounting
plate, remove the battery cover, see Figure 4 and replace the batteries. Use only Duracell
Alkaline MN2400BK AAA size batteries, available from a local retailer.
Insert the new batteries with the orientation shown on the base. Replace the battery cover
and carefully line up the alarm on the base, gently press home and twist on. This connects
the batteries. The red, yellow and green LEDs will blink in sequence to show the batteries are
connected properly. After 15 s, press the test/hush button to ensure that the alarm works.
