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Thanks for buying the 

CO

 wireless carbon monoxide (CO) alarm. 

This  user  guide  contains  important  information  on  starting  operation  and 
using the devise. Store this user guide in a safe place for future reference. 
These instructions are a part of this product – bear this in mind if you pass on 
this product to others.
Please take a few minutes to thoroughly read the user’s guide and familiarize 
yourself and your family with its operation.
Caution:

• This CO alarm is designed for indoor use only. DO not expose to rain or 
moisture. DO not knock or drop the detector. DO not open or tamper with 
the alarm as this could cause malfunction.
• The alarm will not protect against the risk of carbon monoxide poisoning 
when the battery has drained.
• Installation of the alarm should not be used as a substitute for proper 
installation,  use  and  maintenance  of  fuel  burning  appliances  including 
appropriate ventilation and exhaust systems.

1. POSITIONING THE SMOKE ALARM

When choosing your installation locations, make sure you can hear the alarm 
from all sleeping areas. If you install only one CO alarm in your home. Not in 
the  basement  or  furnace  room.  The  recommended  position  for  the  unit 
should be at least 1.8 meters (about 6 feet) above the floor level. Far away 
metal installation.
Recommended installation locations:
The following suggestions are intended to help you with the placement and 
installation of your CO alarm.

• Place out of the reach of children. Under no circumstance should 
children be allowed to handle the CO alarm.
• Install in a bedroom or hallway located close to the sleeping area. Take 
special care to verify the alarm can be heard in sleeping areas.
• It is recommended that a CO alarm be installed on each level of a 
multilevel home.
• Locate 1~3 meter (3.3~10feet) away from all fuel burning appliances.
• Placing at eye level allows for optimum monitoring of the red and green 
indicator lights.
• Insure that all vents of the unit are unobstructed.
• Do not install in dead air spaces such as peaks of vaulted ceilings, or 
gabled roofs.
• Do not install in turbulent air from ceiling fans.
• Do not place near fresh air vents or close to doors and windows that 
open to the outside.
• Keep the CO alarm away from excessively dusty, dirty, or greasy areas 
such as kitchens, garages and furnace rooms. Dust, grease and household 
chemicals can affect the sensor.
• Keep out of damp and humid areas such as the bath room. Avoid 
spraying aerosols near the CO alarm.
• Do not install in areas where the temperature is below -10ºC or hotter 
than 40ºC.
• Do not place behind curtains or furniture. CO must be able to reach the 
sensor for the unit to accurately detect CO.
• Do not place near metal objects, otherwise it will affect the distance of 
wireless signal transmission.

2. CO OVERVIEW

POWER indicator: The POWER indicator (green LED) is used to indicate power 
status of the CO alarm or remote alarm status of the CO alarm. The POWER 
indicator will flash every 30 seconds.
FAULT indicator: The FAULT indicator (yellow LED) is used to indicate fault 
warning status of the CO alarm.

ALARM indicator: The ALARM indicator (red LED) is used to indicate local 
alarm status of the CO alarm.
TEST button: The TEST&SILENCE button is used to test the detectors. Press 
and hold 2 seconds then release to enable TEST button. In 2 seconds.
SILENCE button: The SILENCE button is used to silence the unit during alarm. 
Press and hold 2 seconds to silence the alarm for 5 minutes.
Alarm  sounder:  The alarm sounder is used to send out local CO alarm 
warning and remote CO alarm status and fault warning information.

3. OPERATION AND TESTING

Start up: After connecting the battery, all three LEDs light up briefly and the 
CO alarm confirms start-up with a beep.
After power on, 30 seconds before the green LED flash every 3 seconds, this 
is preheated state. 30 seconds later the green LED flashing every 30 seconds 
indicates the unit is functioning properly.
Normal  operation:  The  POWER  indicator  (green  LED)  flashing  every  30 
seconds.
Fault warning: If the unit chirps once every 30 seconds, with FAULT indicator 
(yellow  LED)will  be  flash.  It  indicates  the  CO  alarm  is  in  malfunction 
condition.  That  means  your  CO  alarm  has  no  detecting  function  and  no 
respond CO.
Replace  battery,  if  condition  continues,  the  CO  alarm  has  malfunctioned. 
Replace immediately. Please contact us to more service.
Low battery voltage warning: If the unit chirps twice every 30 seconds, with 
FAULT indicator (yellow LED)will be flash. It indicates the battery is low. You 
need to replace the battery.
Note: The unit will not protect against the risk of carbon monoxide poisoning 
when the battery has drained.
End of life warning:
If the unit chirps 3 times every 30 seconds with FAULT indicator (yellow LED) 
flash. It indicates end of life of CO alarm. You need to immediately replace the 
CO alarm.
Local CO alarm warning
When the unit detects a dangerous level of CO, the unit will emit a loud alarm 
pattern. The alarm signal pattern is 4 quick beeps followed by 5 seconds of 
silence. This cycle repeats as long as a dangerous CO condition exists. The red 
alarm LED will flash the same pattern.
This signal will repeated until the alarm resets after dissipation of CO or the 
alarm signal is manually silenced.
Remote CO alarm warning: When the unit detects other unit in alarm status, 
the unit will emit a loud alarm pattern. The alarm signal pattern is 4 quick 
beeps followed by 5 seconds of silence. This cycle repeats as long as a 
dangerous  CO  condition  exists.  The  green  alarm  LED  will  flash  the  same 
pattern.
This signal will repeated until the local alarm resets after dissipation of CO or 
the local alarm signal is manually silenced.
Local CO alarm warning silence: If the unit is under the CO alarm warning, 
enable  the  TEST&SILENCE  button,  it  will  come  into  silence  status  for  5 
minutes, and ALARM indicator (red LED) still keep flashing. At the same time, 

ALARM indicator

(red LED)

Sounder

POWER indicator

(green LED)

FAULT indicator

(yellow LED)

TEST/SILENCE 

button

FABRICANTE DE PRODUCTOS CONTRA INCENDIOS - FIRE PROTECTION MANUFACTURER

Ctra. de Molins de Rei a Rubí, Km. 8,4 - 08191 RUBÍ (Barcelona) SPAIN.

Tlf.: +34 935 862 690 - Fax:+34  936 999 261 - [email protected] - www.cofem.com

628010 - MAY18

1973

CO

(english)

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