Owner`s manual
 - 4 - 
WARNING! This product is intended for use in ordinary indoor locations 
of family living units. It is not designed to measure compliance with 
Occupational Safety and Health Administration (OSHA) commercial or industrial 
standards. Individuals with medical problems may consider using warning 
devices which provide audible and visual signals for carbon monoxide 
concentrations under 30 ppm. 
  WARNING 
Actuation of this device indicates the presence of carbon monoxide (CO) which 
can KILL YOU. 
If alarm signal sounds (the red LED will flash and the alarm will sound 4 short 
beeps in every 6 seconds): 
  1) Operate reset/silence button to temporarily silence alarm; 
2) Immediately move to fresh air - outdoors or by an open door or window.  
Check that all persons are accounted for. Do not re-enter the premises or 
move away from the open door/window until the emergency services 
responders have arrived, the premises have been aired out, and your alarm 
remains in its normal condition; 
3) Call your emergency services (tel. no.      ) [fire department or 911]. 
4) After following steps 1- 3, if your alarm reactivates within a 24 hour period, 
repeat steps 1-3 and call a qualified appliance technician (tel. no. ) 
to investigate for sources of CO from fuel burning equipment and 
appliances, and inspect for proper operation of this equipment. If problems 
are identified during this inspection, have the equipment serviced 
immediately. Note any combustion equipment not inspected by the 
technician and consult the manufacturers' instructions, or contact the 
manufacturers directly, for more information about CO safety and this 
equipment. Make sure that motor vehicles are not, and have not been, 
operating in an attached garage or adjacent to the residence. 
If “service” (trouble) signal sounds (the red LED will flash twice and the alarm will 
sound 2 short beeps every minute): 
See SECTION 11 for return address for servicing. 
Conditions which can result in transient CO situations such as: 
1) Excessive spillage or reverse venting of fuel burning appliances caused by 
outdoor ambient conditions, such as: 
i)  Wind direction and/or velocity, including high gusts of wind. Heavy air in 
the vent pipes (cold/humid air with extended periods between cycles). 
ii)  Negative pressure differential resulting from the use of exhaust fans. 
iii)  Simultaneous operation of several fuel burning appliances competing for 
limited internal air. 
iv)  Vent pipe connections vibrating loose from clothes dryers, furnaces, or 
water heaters. 
v)  Obstructions in or unconventional vent pipe designs which can amplify 
the above situations. 
vi)  Poorly designed or maintained chimneys and/or vents. 
2) Extended operation of unvented fuel burning devices (range, oven, fireplace, 
etc.).
3) Temperature inversions which can trap exhaust gases near the ground. 
4) Car idling in an open or closed attached garage, or near a home. 
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