Installation Instructions

Test Key / Mute Key
4 minutes, if the CO concentration caused the alarm still remains at
alarming condition, the CO sensor will reactivate.
TAKING CARE OF YOUR CO ALARM
You have to maintain the CO sensor frequently to ensure it working
properly. Few tips are provided for you to take care of your CO sensor
PSG04:
(a)Use a vacuum cleaner to clean the CO sensor cover once a month,
using the soft brush attachment, never use water, cleaners as they
may damage the unit.
(b)Press the Test/Mute button to test its operating function once every
week.
MEANING OF LED LIGHT & SOUND
The red, green, yellow LED light and sound turn on and/or off to
indicate various situations. There are a few different LED light and
sound operations:
Power on mode: Three LEDs blink and buzzer beeps for 0.5 second
as soon as the batteries are installed.
Stand-by mode: green LED flashes once in every 60 seconds, which
means the unit is receiving power and also indicates it is functioning
properly.
CO Alarm mode: When the unit sensors CO which is at alarming
level , the red LED light flashes rapidly and buzzer sounds loudly with
repeating 4 quick beeps and pause 5 seconds and then 4 quick beeps.
Low battery warning mode: The yellow LED flashes once in a minute
and the buzzer chirps also once in a minute. This warning should last
for up to 30 days, but please replace the battery asap before battery
power is completely exhausted.
Malfunction (Error) mode: The yellow LED flashes three times in a
minute and buzzer chirps once in a minute. This indicates the unit is
malfunctioned and needs to be replaced.
Low sensitivity (Aging) mode: The yellow LED flashes twice in a
minute and buzzer chirps once in a minute. This means unit needs to
be replaced.
End of life signal mode: The yellow LED flashes four times in a
minute and buzzer chirps once in a minute. This indicate the CO alarm
unit is reaching the end of this useful life (around 5 years after the unit
is purchased), please replace with the new CO alarm.
6