Siterwell GS811-A User manual

1/19 GS811-A MANUAL Rev.D
CARBON MONOXIDE ALARM USER’S MANUAL
MODEL No.: GS811-A
SITERWELL

2/19 GS811-A MANUAL Rev.D
Table of Contents
1. Welcome -------------------------------------------------------------------3/18
2. Carbon Monoxide(CO) overview---------------------------------------4/18
3. Product Overview and Specification: ----------------------------------6/18
4. Understanding your CO alarm: ---------------------------------------7/18
5. Installation instructions:--------------------------------------------------10/18
6. General maintenance: ----------------------------------------------------14/18
7. Warranty Information-----------------------------------------------------15/18
8. Manufacturer and Servicing information:------------------------------16/18
9. Warranty Card---------------------------------------------------------------17/18
10. What to do When the Alarm Sounds: ----------------------------------18/18

3/19 GS811-A MANUAL Rev.D
XX1. Welcome:
Thank you for purchasing the GS811-A carbon monoxide (CO) alarm. This CO
alarm is a single station alarm. You are now able to protect your home and
family with this CO alarm. Please take a few minutes to thoroughly read the
user’s manual and familiarize yourself and your family with its operation.
And save for future reference.
CAUTION: 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.
WARNING:The CO alarm GS811-A is designed to detect carbon
monoxide from ANY source of combustion. It is NOT designed to detect
smoke, fire, or any other gas. CO alarm GS811-A is not a substitute for
installing and maintaining an appropriate number of smoke alarms in you
home.
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.
WARNING:This alarm will only indicate the presence of carbon monoxide
gas at the sensor. Carbon monoxide gas may be present in other areas.
WARNING: This device is designed to protect individuals from acute
effects of carbon monoxide exposure. It may not fully safeguard individuals with
specific medical conditions. If in doubt, consult a medical practitioner.
Individual with medical problems may consider using warning devices which

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provide audible and visual signals for carbon monoxide concentration under 30
PPM.
XX2. Carbon Monoxide(CO) Overview:
2.1 General Carbon Monoxide Information
CO cannot be seen, smelled or tasted and can be fatal. The build up of CO in
the blood is called the carboxyhemoglobin (COHb) level and interferes with the
body’s ability to supply itself with oxygen. Depending on the concentration, CO
can kill in minutes.
The most common sources of CO are malfunctioning gas appliance used for
heating and cooking ,vehicles running in an attached garage, blocked chimneys
or flues, portable fuel burning heaters, fireplaces, fuel powered tools and
operating a grill in an enclosed space.
Indications of carbon monoxide poisoning include symptoms similar to the flu,
but with no fever. Other symptoms include dizziness, fatigue, weakness,
headache, nausea, vomiting, sleepiness and confusion. Everyone is
susceptible to the danger of CO, but experts agree that unborn babies, small
children, pregnant women, senior citizens and people with heart or respiratory
problems are at the highest risk for serious injury or death. Every year a
qualified technician should inspect and clean your heating system, vents,
chimney ,and flues.
2.2 Symptoms of Carbon Monoxide Poisoning
The following symptoms are related to CARBON MONOXIDE POISONING and
should be discussed with ALL members of the household:
2.2.1 Mild Exposure:
Slight headache, nausea, vomiting, fatigue(often described as "Flu-like"
symptoms).
2.2.2 Medium Exposure:
Severe throbbing headache, drowsiness, confusion,fast heat rate.
2.2.3 Extreme Exposure:

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Unconsciousness, convulsion, cardiorespiratory failure, death.
2.2.4 Many cases of reported CARBON MONOXIDE POISONING indicate that
while
victims are aware they are not well, they become so disoriented they are
unable to save themselves by either exiting the building or calling for assistance.
Young children and household pets are typically the first affected.
The above levels of exposure relate to healthy adults. Levels differ for those at
high risk. Exposure to high levels of carbon monoxide can be fatal or cause
permanent damage and disabilities. Many cases of reported carbon monoxide
poisoning indicate that while victims are aware they are not well, they become
so disoriented they are unable to save themselves by either exiting the building,
or calling for assistance. Also, young children and household pets may be the
first effected. Familiarization with the effects of each level is important.
2.3 More detailed information on conditions which can result in
transient CO situations, such as:
1) Excessive spillage or reverse venting of fuel burning appliances caused by:
i) Outdoor ambient conditions such as 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 connection vibrating loose from clothes dryers, furnaces, or water
heaters.
v) Obstructions in or unconventional vent pipe designs which amplify the above
situations.
2) Extended operation of unvented fuel burning devices (range, oven, fireplace,
etc.).
3) Temperature inversions which can trap exhaust gasses near the ground.
4) Car idling in an open or closed attached garage, or near a home.

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XX3. Product Overview and Specification:
Power Supply: DC 4.5V(AA 1.5V*3) battery operated
Recommend battery type: Energizer E91
Sensitivity Setting: Conforms to UL2034 standard.
70PPM Alarm within 60 to 240 minutes
150PPM Alarm within 10 to 50 minutes
400PPM Alarm within 4 to 15 minutes
Standby Current: <40µA(Average)
Alarm Current: <10mA(Average)
Operation Ambient Condition: 40oF(4.4 ℃)~100oF(37.8 ℃), 10~95%R.H.
non-condensing
Storage/Transport Ambient Condition:
-20~+50℃,10~95% R.H. non-condensing
Sensor Type: Electrochemical
Product life: 7 years after initial power up.
Sensor range: 0 – 10000PPM
Alarm sound : ≥85dB at 10 feet @3.2±0.4KHz pulsing alarm
CO alarm silence: about 5 minutes
End of life warning silence: about 48 hours
Note: This CO alarm is designed to detect carbon monoxide gas from
ANY source of combustion. It is NOT designed to detect smoke, fire or
any other gas.
TEST/RESET
button
STATUS indicator
(green LED)
Alarm sounder
AlARM indicator
(red LED)
Figure 1

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WARNING! Use only the batteries specified. Use of different batteries
may have a detrimental effect on the CO alarm.
XX4. Understanding Your CO Alarm:
4.1 STATUS indicator
The STATUS indicator (green LED) is used to indicate work status of the CO
alarm.
4.2 ALARM indicator
The ALARM indicator (red LED) is used to indicate alarm or warning status of
the CO alarm.
4.3 TEST/RESET button
The TEST/RESET button is used to test the unit’s electronics and to reset the
unit during alarm. Press and hold 0.5 seconds then release to enable the
TEST/RESET button.
4.4 Start up state
When first power on, 30 seconds before the green light flash every 3 seconds,
This is preheated state , 30 seconds later the green light flashing every 30
seconds indicates the unit is functioning properly
4.5 Normal operation
The green LED flashes every 30 seconds. It indicates the CO alarm is unit is
functioning properly.
4.6 Malfunction warning
The red LED flashes and the horn chirps once every 30 seconds. It indicates
the CO alarm is in malfunction condition.
Replace battery, if condition continues, the CO alarm has malfunctioned.
Replace immediately. The malfunction alarm will not respond CO.

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4.7 Low battery voltage warning
The red LED flashes and the horn also chirps twice every 35 seconds. It
indicates the battery is low. You need to replace the battery.
NOTE: The detector will not protect against the risk of carbon monoxide
poisoning when the battery has drained.
4.8 End of life warning
The red LED flashes and the horn chirps 3 times every 35 seconds. It indicates
end of life of CO alarm. You need to replace the CO alarm immediately.
Warning: After Seven(7) years from initial power up, the alarm will under the end of
life warning model. Replace the alarm immediately! It will not detect CO in this condition.
4.9 End of life warning silence
When your alarm is under the end of life warning, enable the TEST/RESET
button, it will come into silence status for about 48 hours, and the red LED still
keep flashing.
NOTE: When the alarm under End of life for 30days, it will not enter into
silence status.
4.10 CO alarm warning
When the alarm 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
LED will flash the same pattern. After the initial 4 minutes of the alarm signal,
the 5 seconds silence period will change to 60 seconds.
This signal shall be repeated until the alarm resets after dissipation of CO or the
alarm signal is manually silenced.
Important : If the alarm sounds, it should be treated as a potentially
serious condition. See “ 10 What to do When the Alarm Sounds ! ”

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4.11 CO alarm warning silence
When the alarm is in the CO alarm warning, enable the TEST/RESET button, it
will come into silence status for 5 minutes, and the red LED still keep flashing
until the silence mode is over.
NOTE: The alarm signal will reenergized within 6 minutes from the time
the TEST/RESET button is operated if the concentration of CO
surrounding the alarm remains at 70ppm or greater.
4.12 Test the unit
To test the unit, press and hold the TEST/RESET button about 0.5 seconds
then release to enable the TEST/RESET button, you should hear alarm sound
pattern and with a corresponding red LED flash.
NOTE: After the TEST/RESET button is pressed, the alarm sounds and the
red alarm light flashes. This does not indicate that carbon monoxide is
present.
NOTE: Test the unit weekly! If at any time your unit does not perform as
described, replace it immediately.
NOTE: Due to the loudness of the alarm, we suggest that you place your
fingers over the sounder opening while testing your alarm.

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XX5. Installation Instructions:
5.1 Recommended Installation locations:
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, install
the alarm near bedrooms. 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.
CAUTION: This alarm must be mounted on the wall.
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
Figure 2

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home.
·Locate at least 8 feet 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.
5.2 Locations To Avoid
IMPORTANT: Improper location can affect the sensitive electronic
components in this alarm. To void causing damage to the unit, to provide
optimum performance, and to prevent unnecessary nuisance alarms:
·Do not install in kitchens, gargages or furnace rooms that may expose the
sensor to substances that could damage or contaminate it.
·Do not install within 1.5m of heating or cooking appliance.
·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 colder than 0℃or hotter than
40℃
·Do not place behind curtains or furniture. CO alarm must be able to reach the
sensor for the unit to accurately detect carbon monoxide.
5.3 Battery installation and replacement
To install or replace the battery in unit, please perform the following steps:
5.3.1 Take down the unit from screw heads of the wall.
5.3.2, Take down the old batteries, then make the power input connector be
connected to the new alkaline battery. (see Figure3 )

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5.3.3 Put the batteries into the battery box.
5.3.4 Hook the alarm body over the screw heads onto keyholes in back of the
unit.
5.3.5 Test alarm using the TEST/RESET button. The alarm pattern is 4 short
beeps-followed by 5 seconds of silence followed by 4 short beeps. If it have not
this action, indicate the alarm is bad or the installing operation is wrong, and
you should contact us for gain the correctly method of disposal.
WARNING! Use only the batteries specified. Use of different batteries
may have a detrimental effect on the CO alarm. A good safety measure is
to replace the battery at least once a year.
Note: Reinstall immediately after cleaning and then test unit using the
TEST/RESET button!
Note: As you install the battery on the unit, maybe it will sound for
several minutes, then stop and enter in normal operation mode. If it
always sounds, please call our agent.
Battery box
-
+
+
+
-
-
Figure 3

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5.4 Mounting step
5.4.1 Drilling two ф5.0mm holes in the wall, the distance between two holes
center is 2.24” (57mm), then inserting two plastic stopper provided into the
holes.(see figure 4)
5.4.2 Insert the two screws provided until the screw heads are approximately
3/16’’(5mm) from wall.
5.4.3 Test the unit by using the TEST/RESET button. Ensure the unit sound is
alarm pattern.
5.4.4 Hook the unit over the screws onto keyholes in back of unit.
(Figure 1)
4
5.5 Important Labels Provided
2pc labels has been provided that has important information on what to
do in case of an alarm. Add the phone number of the emergency service
provider and phone number of qualified appliance technician in the space
provided. place one label next to the alarm, and the ther label near a
source of fresh air where they plan to gather after the alarm indicates the
resence of carbon monoxide
keyhole
keyhole
Distance between two
holes center: 57mm
plastic stopper
Holes of the wall
Figure 4

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XX6. General Maintenance:
CAUTION: The CO alarm GS811-A 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.
To keep your CO alarm in good working order, please follow these simple
steps:
7.1 Verify the unit's alarm sound and indicators operation by enable the
TEST/RESET button once a week.
7.2 Remove the unit from the wall and clean the alarm cover and vents with a
soft brush attachment once a month to remove dust and dirt.
7.3 Never use detergents or other solvents to clean the unit.
7.4 Avoid spraying air fresheners, hair spray, or other aerosols near the CO
alarm.
7.5 Do not paint the unit. Paint will seal the vents and interfere with the sensor's
ability to detect CO. Never attempt to disassemble the unit or clean inside. This
action will void your warranty.
7.6 As soon as possible, place the CO alarm back in its proper location to
assure continuous protection from carbon monoxide poisoning.
7.7 When household cleaning supplies or similar contaminants are used, the
area should be ventilated.
WARNING: The following substances can affect the sensor and may
cause false actions: methane, propane, isobutene, isopropanol, ethylene,
benzene, toluene, ethyl acetate, hydrogen sulfide, sulfur dioxides, alcohol
based products, paints, thinner, solvents, adhesives, hair sprays, after
shaves ,perfumes and some cleaning agents.
WARNING: Your CO alarm will not be operational and will not monitor for
CO levels without battery.
NOTE: Test the unit weekly! If at any time your unit does not perform as
describe, replace it immediately.

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XX7. Warranty Information:
Dear customer,
Our products are subject to strict quality controls. However, if this device should
unexpectedly not function perfectly, please contact the customer services
address given on warranty service information. This is the only way for you to
be able to return your device of have it picked up free.
The warranty period is 36 months and begins on the day of purchase.
Please always keep your till receipt as proof of purchase. Warranty claims can
only be made for possible defects caused by material and production faults.
During the warranty period, defective devices can be sent to the service
address given overleaf for you (post paid). You will then receive a new or
repaired device back free. After the warranty period has expired you still have
the possibility of sending the defective device for repair to the address given
overleaf. Repairs carried out after the warranty period must be paid for.
In the event of misuse or improper treatment, use of force or intervention not
carried out by our authorized service branches, the warranty is no longer valid.
This warranty does not restrict your legal rights.
NOTE: In the event of a warranty claim, please return the till receipt and
completed warranty card with fault description together with the defective
device.

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X8. Manufacturer and Servicing information:
Manufactured by SITERWELL.
For servicereturn to seller or SITERWELL:
Manufacturer: NINGBO SITERWELL ELECTRONICS CO., LTD
Address: NO.76 HAICHUAN ROAD CHUANGYE ZONE B, JIANGBEI, NINGBO,
CHINA
Tel: [phone]
Fax: [phone]
E-mail: [e-mail]
Seller information:
Seller:
Address:
Tel:
Fax:
Email:

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XX9. Warranty Card:
Last Name: First Name:
Address:
Zip Code: Country:
City: Phone:
Fault description:

18 /19 GS811-A MANUAL Rev.D
Date of purchase:
Signature:
XX10. What to do When the Alarm Sounds:
WARNING! –Actuation of this device indicates the
presence of dangerous levels of CO! CO can be fatal! If the alarm
sounds:
1 Operate the TEST/RESET button.
2 Call your emergency services (Fire Department or 911).
3 Immediately move to fresh air outdoor or by an open door/window. Do a head
count to check that all persons are accounted. Do not reenter the premises nor
Phone Number:
:

19 /19 GS811-A MANUAL Rev.D
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.
4 After following steps 1-3 , if your alarm reactivates within a 24 hour period,
repeat steps 6.1-6.4 and call a qualified appliance technician to investigate for
sources of CO from fuel burning equipment and appliances, and to inspect for
proper operation of 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 manufacturer’s instructions or
contact the manufacturer directly for more information about CO safety and this
equipment. Make sure that motor vehicles are not or have not been operating in
an attached garage or adjacent to the residence.
Never restart the source of a CO problem until it has been corrected.
Never ignore the sound of the alarm!
If the alarm is sounding, pressing the test/reset button will terminate the
alarm. If the CO condition that caused the alert in the first place continues,
the alarm will reactivate. If the unit alarms again within six minutes, it is
sensing high levels of CO which can quickly become a dangerous
situation.