Ei Electronics Smoke Alarm Ei 3100RF User Manual

Radio Wireless  
Interconnect  
SMOKE ALARM  
Instruction Leaflet  
Contains vital information on unit operation and installation.  
Read and retain carefully. If you are just installing the unit,  
this leaflet MUST be given to the householder.  
Model:  
Ei 3105RF (OPTICAL WITH HUSH)  
Ei 3100RF (IONISATION)  
P/N B15??? Rev 0  
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10. If you have any doubt or query about Smoke Alarms con-  
sult the supplier or your local Fire Brigade.  
2. INTRODUCTION  
Congratulations on purchasing Ei3105RF or Ei3100RF  
RadioLINK Smoke Alarms. You can easily install these  
alarms throughout the house in closed rooms, corridors and  
in the attic for the fastest response to developing fires.  
Closed doors are great for slowing down the spread of fire,  
but unfortunately they can also greatly slow down the  
response time of alarms, as they block the smoke getting to  
them. Without interconnection, closed doors also greatly  
reduce the alarm sound level throughout the house, so even  
though the fire is detected early, the alarm may not be heard.  
The Ei3105RF/Ei3100RF RadioLINK Smoke Alarms offer the  
comfort of interconnection without the hassle of installing the  
interconnect wires. The wireless interconnect helps ensure  
the alarm will be heard everywhere - including the bedrooms.  
The wireless interconnect will operate as received once the  
batteries are connected. To check operation, first connect all  
the batteries (see section 1 para 2.) and then hold down the  
test button on the first unit until the amber light comes on con-  
tinuously for 3.5 seconds. All the other smoke alarms will  
respond within 5 seconds. If there is any possibility of a  
neighbour having a similar system, you should house code  
your units so your system will not cause his/hers to alarm or  
vice versa. This is easily done and only takes a few minutes-  
(see section 6.0).  
3. LOCATING YOUR SMOKE ALARMS  
Sufficient smoke must enter your Smoke Alarm before it will  
respond. Your Smoke Alarm needs to be within 10 paces (7.5  
metres) of the fire to respond quickly. The smoke alarms need  
to be in positions where they can be heard throughout your  
home, so they can wake you and your family in time for every-  
one to escape. A single Smoke Alarm will give some protec-  
tion if it is properly installed, but most homes will require two  
or more to ensure that a reliable early warning is given. For  
recommended protection you should put individual Smoke  
Alarms in all the rooms (apart from the kitchen) where fire is  
most likely to break out.  
Your first Smoke Alarm should be located between the sleep-  
ing area and the most likely sources of fire (living room or  
kitchen for example). But it should not be more than 10 paces  
(7.5 metres) from the door to any room where a fire might  
start and block your escape from the house.  
3.1 Single Storey Dwelling.  
If your Home is on one level (a bungalow or mobile home for  
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example) you should put your first Smoke Alarm in a corridor  
or hallway between the sleeping and living areas. Place it as  
near to the living area as possible, but make sure you can  
hear it loudly enough to wake you in the bedroom. (for exam-  
ple, see figure 2).  
If your bungalow is very large and the corridor or hallway is  
more than say 20 paces (15 metres) long, one Smoke Alarm  
will not be sufficient. This is because no matter where it is  
located it will be more than 7.5 metres from potential fires.  
Recommended locations, Figures 2, 3, & 4  
for minimum protection  
• on each storey  
• in each sleeping area  
• every 7.5 metres of hallways & rooms  
• within 3 metres of all bedroom doors  
• all units interconnected  
for recommended protection  
in addition  
• in every room (except bathrooms and kitchens)  
BEDROOM  
KITCHEN  
DINING ROOM  
BEDROOM  
BEDROOM  
Figure 2: Single storey dwelling  
BEDROOM  
BATH  
ROOM  
KITCHEN  
LIVING ROOM  
BEDROOM  
DINING ROOM  
BEDROOM  
Figure 3: Single storey dwelling with separate sleeping areas  
In houses with more than one sleeping area, Smoke Alarms  
should be placed between each sleeping area and the living  
area (for example, see figure 3).  
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3.2 Multi Storey Dwellings  
If your home has more than one floor, at least one alarm should  
be fitted on each level (see figure 4). The Ei3105RF/Ei3100RF  
Wireless Smoke Alarm is ideal in this situation as they are  
automatically interconnected without wiring.  
3.3 Recommended Protection  
Fire authorities recommend you put individual Smoke Alarms  
in or near all the rooms where fire is most likely to break out  
(apart from the locations to avoid, mentioned below). The liv-  
ing room is the most likely place for a fire to start at night, fol-  
lowed by the kitchen and then the dining room. You should  
also consider putting Smoke Alarms in any bedrooms where  
fires might occur, for instance, where there is an electrical  
appliance such as an electric blanket or heater, or where the  
occupant is a smoker. You could also consider putting Smoke  
Alarms in any rooms where the occupant is unable to respond  
very well to a fire starting in the room, such as an elderly or  
sick person or a very young child.  
Figure 4: Multi Storey Dwelling  
3.4 Checking you can hear your Smoke Alarms  
With the Smoke Alarms sounding in their intended locations,  
check you are able to hear them in each bedroom with the  
door closed, above the sound of your Audio/TV Systems. The  
Audio/TV systems should be set to a reasonably loud conver-  
sation level. If you can’t hear it over your radio the chances  
are that it wouldn’t wake you. This Wireless Smoke Alarm will  
help to ensure the alarm will be heard through-out the house.  
4. POSITIONING YOUR SMOKE ALARM  
4.1 On a ceiling  
Hot smoke rises and spreads out, so a central ceiling position  
is the recommended location. The air is “dead” and does not  
move in corners, therefore Smoke Alarms must be mounted  
away from corners. Place the unit at least 0.30m from any  
light fitting or decorative object which might obstruct smoke  
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entering the Smoke Alarm. Keep at least 0.30m away from  
walls and corners (see figure 5).  
4.2 Wall Mounting  
When a ceiling position is not possible (for example on a ceil-  
ing having exposed beams or joists, or built-in radiant heat-  
ing) put the top edge of your Smoke Alarm between 0.15m  
and 0.30m below the ceiling. Keep at least 0.30m from cor-  
ners (see figure 5).  
Figure 5  
Figure 6  
IDEAL IN CENTRE  
OF CEILING  
0.15 to 0.3m  
DEAD AIR SPACES  
0.9m  
(3 FEET)  
NEVER WITHIN 0.3m  
OF ANY CORNER  
4.3 On a sloping Ceiling  
In areas with sloping or peaked ceilings install your Smoke  
Alarm 0.90m from the highest point measured horizontally  
(see figure 6), because “dead air” at the apex may prevent  
smoke from reaching the unit.  
4.4 Locations to Avoid  
Don’t place your Smoke Alarm in any of the following areas:  
• Bathrooms, kitchen, shower rooms, garages or other rooms  
where the smoke alarm may be triggered by steam,  
condensation, normal smoke or fumes.  
• Attics or other places where extremes of temperature may  
occur (below 4°C or above 40°C).  
• Near a decorative object, door, light fitting, window molding  
etc., that may prevent smoke from entering the Smoke  
Alarm.  
• Surfaces that are normally warmer or colder than the rest of  
the room (for example attic hatches, uninsulated exterior  
walls etc). Temperature differences might stop smoke from  
reaching the unit.  
• Next to or directly above heaters or air conditioning vents,  
windows, wall vents etc. that can change the direction of  
airflow.  
• In very high or awkward areas where it may be difficult to  
reach the alarm for testing or battery replacement.  
• Locate unit at least 1.5m away from fluorescent light fittings  
as electrical “noise” and/or flickering may affect the unit.  
• Locate away from very dusty or dirty areas as dust build-up  
in the chamber can make unit too sensitive and prone to  
alarm.  
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It can also block the insect screen mesh and prevent smoke  
from entering the chamber.  
• Do not locate in insect infested areas. Small insects getting  
in to the chamber can cause intermittent alarms.  
5. INSTALLING YOUR SMOKE ALARMS  
(a) Attaching to Ceiling or Wall.  
OPEN TAB  
Ei3105RF  
BATTERY  
INSTALLATION  
DATE  
AMBER  
LIGHT  
TEST & HUSH  
BUTTON  
PUSH BACK  
TO EASE  
BATTERY  
REMOVAL  
BATTERY  
Figure 7  
SCREW HOLE  
OPEN TAB  
Ei3100RF  
COVER  
BATTERY  
INSTALLATION  
DATE  
SNAP ON  
AMBER  
HINGES  
LIGHT  
PUSH BACK  
TO EASE  
BATTERY  
BATTERY  
REMOVAL  
SCREW HOLE  
Figure 7a  
HOUSE CODE SWITCH  
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1. Pull cover open at tab. Remove cover from base by sepa-  
rating at rear snap-in hinges by rotating cover backwards.  
2. Place the base on ceiling or wall exactly where you want to  
mount the unit. With a pencil, mark the location of the screw  
holes.  
3. Taking care to avoid any electrical wiring in the ceiling or  
wall, drill a hole through the centres of the marked locations.  
Push the plastic Screw Anchors provided into the drilled  
holes. Screw in firmly.  
(b) Connecting the battery  
The battery is easily removed from the holder by holding back  
one of the plastic clips while lifting the battery with the other  
hand.  
Snap Battery Connectors to Battery. They fit together only one  
way.  
Gently push Battery into Battery Holder  
With a pencil, write the date of battery installation on the  
inside of the cover to remind you when to replace the battery.  
To close the cover match up snap-in hinges and gently press  
together until base and cover snap together. Test the installed  
Smoke Alarm - see section “Manually Testing your Smoke  
Alarm”.  
NOTE: You may hear a loud chirp when attaching the Battery  
Connectors to the Battery.  
Battery Missing indicator  
The unit is fitted with a warning flag which pops up when the  
battery is removed. This prevents the cover from closing when  
there is no battery in the unit. When the battery is being  
installed or changed, this flag must be held down while gently  
pushing the Battery into the Battery Holder. (Figure 8).  
Figure 8  
7.Check the radio link interconnection by holding the test but-  
ton down until the amber light has come on continuously – this  
indicates that the alarm is now transmitting radio link signals.  
You should now be able to hear the other alarm(s) in the dis-  
tance. If you do not hear the other alarm(s) then you may  
need to rotate/resite the alarm (see section 5.2 below).  
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8. The units, as received, will transmit and receive the default  
RF signal. However, to avoid other neighbouring systems  
interfering with your alarms, we recommend that you “house  
code” your alarms.  
Install all the other alarms similarly.  
5.2 If Radio Link is not working  
It is imperative that all smoke alarms in your system commu-  
nicate with each other. The number of walls, ceilings and  
metal objects in the radio link signal path reduces the strength  
of the radio link signals between the smoke alarms.  
Accordingly, one or more smoke alarms may have difficulties  
in communicating to all the other units in the system.  
If, when checking the radio link interconnection, some of the  
alarms do not respond to the button test, then you will need to  
rotate / re-locate the units. There are a number of reasons  
why the radio link signals may not reach all the smoke alarms  
in your system (see section 10.2 on “Limitations of Radio  
Frequency Signals”). However, you should try re-locating the  
smoke alarms (e.g. move them away from metal surfaces or  
wiring) or rotating the smoke alarms.  
Rotating and/or re-locating the smoke alarms may move them  
out of the range of existing smoke alarms even though they  
may have already been house coded correctly in the system.  
It is important therefore to check that all detectors are com-  
municating in their final installed positions. If smoke alarms  
are rotated and/or resited, we would recommend that all the  
smoke alarms are returned to the factory settings and then  
house coded again in their final positions (see section 6.0).  
The radio link interconnection should then be re-checked  
again.  
6. HOUSE CODING YOUR ALARMS  
House coding your alarms will prevent neighbouring alarm  
systems from setting off your own alarms and vice versa. The  
house coding process changes the radio signal from the  
common factory signal to a unique radio code for each unit.  
AMBER  
LIGHT  
HOUSE  
CODE  
SWITCH  
HOUSE  
CODE  
SWITCH  
AMBER  
LIGHT  
Figure 9a  
Figure 9  
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6.1 House Code Procedure  
Ensure that the battery is connected to all alarms before  
beginning the house code procedure  
1. Pull cover open at tab. Press the house code switch and  
hold until the amber light comes on and then release. The  
amber light will then flash rapidly for about 1 second to indi-  
cate the unit is now in the house code mode (see fig 9&9a).  
2. Similarly press and hold the house code switch on the sec-  
ond installed unit until its amber light comes on and then  
release. Put all the remaining alarms into the house code  
mode in the same manner.  
3. When in the house code mode, the amber light will flash a  
number of times every 5 seconds to indicate:  
(a) the alarm is in house code mode and  
(b) the number of units that have been identified as being part  
of your system.  
For example with 3 alarms in your system, you should see 3  
amber light flashes every 5 seconds, with 4 alarms in your  
system you should see 4 amber light flashes and so on. The  
maximum number of light flashes that can be seen is 12, even  
though more alarms may be house coded in your system.  
(Please note that during the house coding process one alarm may  
sound for 1 minute.)  
Check that the number of amber light flashes corresponds to  
the number of units in the system. If not see section 5.2.  
4. The units will stay in house code mode for 15 minutes and  
then reset automatically. Alternatively they can be taken out of  
house code mode quickly by pressing and holding the house  
code switch until the amber light comes on again. The amber  
light will go out immediately when the switch is released, indi-  
cating that the alarm is no longer in house code mode.  
(Note: The Wireless Alarms can be returned to the originally factory  
settings by pressing and holding the house code switch on until the  
amber light flashes slowly. This will take about 6 seconds. This can-  
cels the house code mode.  
Additional Wireless Smoke Alarms can be added to the sys-  
tem at any time. Simply put all the units, the additional units  
and those previously installed, into the house code mode at  
the same time.  
7. TESTING AND MAINTAINING YOUR  
SMOKE ALARMS  
Your smoke alarm is a life saving device and should be regu-  
larly checked. Regularly check that the red light on the smoke  
alarm flashes once a minute to show the units are powered.  
Replace the smoke alarm if the flashing stops.  
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7.1 Manually Testing your Smoke Alarm  
It is recommended that you test  
your Smoke Alarm at least weekly  
to be sure the units are working. It  
will also help you and your family to  
become familiar with the sound of  
the alarms.  
Figure 10  
When you press the test button it  
simulates the effect of smoke during  
a real fire. So, there is no need to  
test the Alarm with smoke.  
Press and hold the Test Button until the alarm sounds (see fig-  
ure 10). The alarm will stop sounding shortly after the button  
is released. If you press and hold the button longer, so that  
the amber light also comes on, you will hear the radio link  
interconnected alarms sounding after the local alarm stops.  
WARNING: Do not test with flame.  
This can set fire to the alarm and damage the house. We do  
not recommend testing with smoke as the results can be mis-  
leading unless special apparatus is used.  
7.2 Checking the Wireless Interconnect  
We recommend that the interconnect is tested weekly as fol-  
lows:  
1. Press and hold the test button on the first alarm for 5 sec-  
onds (count up to 10).  
2. The horn will sound and then the amber light will come on  
continuously for 3.5 seconds. (This indicates that the unit is  
transmitting a Wireless Alarm signal to the other units).  
Release the test button. The local alarm will cease and you  
should then be able to hear the other alarms sounding in the  
distance.  
3. Repeat this procedure for all the other alarms.  
7.3 Test/Hush Button to Control Nuisance Alarms  
(Ei3105RF only)  
These smoke alarms have a combined test/hush button to  
help you control nuisance/false alarms.  
If, when the alarm goes off, there is no sign of smoke, heat or  
noise to indicate that there is a fire, you should first get your  
family into a safe place, before you start investigating.  
Check the house carefully in case there is a small fire smoul-  
dering somewhere.  
Check whether there is some source of smoke or fumes, for  
example cooking fumes being drawn past the Smoke Alarm  
by an extractor.  
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If there are frequent nuisance/false alarms it may be neces-  
sary to re-locate the device away from the source of the  
fumes.  
If you installed the smoke alarms as received and did not  
house code them, you may be receiving an alarm signal  
from a neighbouring system. This can be easy rectified  
by “house coding” your alarms (see section 6).  
1. To cancel a false alarm, press the test/hush button. The  
alarm will automatically switch to a reduced sensitivity condi-  
tion. This condition allows unwanted alarms to be silenced for  
a period of approximately 10 minutes. The red light will flash  
every 10 seconds (instead of 40 seconds) to let you know the  
unit has been silenced.  
2. The unit will reset to normal sensitivity at the end of the  
silenced period. If additional silenced time is required, simply  
push the test/hush button again.  
3. If the cause of the alarm is not clear, it should be assumed  
that it is due to an actual fire and the dwelling should be evac-  
uated immediately.  
If kitchen usage/layout is such that there are an unacceptable  
level of nuisance alarms, re-locate the Smoke Alarm further  
away where it will be less affected by cooking fumes etc.  
7.4 Cleaning your Smoke Alarm  
Clean your Smoke Alarm regularly. Use a soft bristle brush or  
the brush attachment of your vacuum cleaner to remove dust  
and cobwebs from the sides and cover slots where the smoke  
enters. Keep cover closed while cleaning. Do not vacuum or  
brush inside the Smoke Alarm.  
WARNING: Do not paint your Smoke Alarm.  
Other than the maintenance and cleaning described in this  
leaflet, no other customer servicing of this product is required.  
Repairs, when needed, must be performed by the manufac-  
turer.  
7.5 Automatic Self-Test (Ei3105RF only)  
The smoke chamber automatically tests itself every 40 sec-  
onds. If the chamber is degraded it will beep without the red  
light flashing at the same time. If this happens clean the unit.  
If the beeping persists and the beep does not coincide with a  
red light flash, return the unit for service (see section 11  
“Getting your Smoke Alarm Serviced”).  
7.6 Dust & Insect Contamination  
All Smoke Alarms and particularly the optical (photoelectric)  
type are prone to dust and insect ingress which can cause  
false alarms.  
The latest design, materials and manufacturing techniques  
have been used in the construction of our Alarms to minimise  
12  
 
the effects of contamination. However it is impossible to com-  
pletely eliminate the effect of dust and insect contamination,  
and therefore, to prolong the life of the Smoke Alarm you must  
ensure that it is kept clean so that excess dust does not build  
up. Any insects or cobwebs in the vicinity of the Smoke Alarm  
should be promptly removed.  
In certain circumstances even with regular cleaning, contam-  
ination can build up in the smoke sensing chamber causing  
the alarm to sound. If this happens the alarm must be  
returned for servicing or replacement. Contamination is  
beyond our control, it is totally unpredictable and is consid-  
ered normal wear and tear. For this reason, contamination is  
not covered by the guarantee and a charge is made for all  
such servicing work.  
7.7 Replacing the Battery  
A fresh Alkaline Battery should last for over a year. When the  
battery power is low and replacement is necessary, the Alarm  
will “beep” and the red light will flash at the same time about  
once per minute for at least 30 days. The battery must then  
be replaced. Also, replace the battery if the alarm does not  
sound when the Test Button is pressed. For maximum relia-  
bility, replace the battery at least once a year. When you  
replace the battery you must press the test button to check  
that the alarm is functioning okay.  
Do not put the Smoke Alarm into a fire.  
8. TROUBLESHOOTING YOUR ALARMS  
8.1 Alarms sounds for no apparent reason  
• House code your alarms (see section 6). If the alarms are  
in the default factory settings, neighbouring units may  
cause them to alarm.  
• Check for fumes, steam, etc. from kitchen or bathroom.  
Paint and other fumes can cause nuisance alarms.  
• Check for any sign of contamination such as cobwebs or  
dust. Clean the alarm as described in section 7.4 if neces-  
sary.  
• On Ei3105RF units press the test/hush button on the unit  
causing the alarm (this can be identified as the alarm with  
the red light flashing rapidly) – this will silence the smoke  
alarm for 10 minutes and also silence all other smoke  
alarms in the system.  
8.2 The alarm fails to sound when the test button is  
pressed  
• Check the age of the unit - see the “replace by” label on  
base of unit.  
• Check the battery snaps are firmly connected on the unit.  
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8.3 The alarms sound but the wireless interconnection  
does not work  
There are certain limitations on radio frequency signals (see  
section 10.2) and so, some alarms may not sound when the  
test button of a smoke alarm. Then;  
• Ensure you have held the test button down until the amber  
light has come on continuously (this could take up to 5 sec-  
onds).  
• House code all smoke alarms as described in section 6.  
• Rotate and/or resite the units – the signal strength may not  
be sufficient due to the distance and/or the number of  
walls/ceilings between the units (see section 5.2).  
9. IMPORTANT SAFEGUARDS  
When using household protective devices, basic safety pre-  
cautions should always be followed, including those listed  
below  
• Please read all instructions.  
• Rehearse emergency escape plans so everyone at home  
knows what to do in case the alarm sounds.  
• Constant exposure to high or freezing temperatures, high  
humidity or a high level of nuisance alarms may reduce the  
life of the battery.  
• Nuisance alarms can be quickly silenced by fanning vigor-  
ously with a newspaper or similar to remove the smoke or  
press the test / hush button (Ei3105RF only).  
• Do not attempt to remove, recharge or burn the battery, as  
it may explode.  
• If it is necessary to remove the battery for separate dispos-  
al, handle carefully to avoid possible eye damage or skin  
irritation if battery has leaked or corroded.  
To maintain sensitivity to smoke, do not paint or cover  
smoke alarm in any manner; do not permit any accumula-  
tion of cobwebs, dust or grease.  
• If unit has been damaged in any way or does not function  
properly,do not attempt a repair. Return Smoke Alarm (see  
- Getting your Smoke Alarm Serviced).  
• This appliance is intended ONLY for premises having a res-  
idential type environment.  
• This is not a portable product. It must be mounted following  
the instructions in this instruction leaflet.  
• Smoke Alarms are not a substitute for insurance. The sup-  
plier or manufacturer is not your insurer.  
• The chamber located in the center of the Smoke Alarm con-  
tains a small amount of radioactive material. Do not tamper  
with the chamber. You may safely change the battery and  
14  
 
clean the Smoke Alarm following instructions in this leaflet.  
• In the United Kingdom Ionisation Smoke Alarms can be dis-  
posed of in normal household refuse, but due to the tiny  
amount of radioactive material contained in the unit, no  
more than one alarm per dustbin.  
• In the Republic of Ireland Ionisation smoke alarms should  
be returned for disposal to the nearest address at the end  
of this leaflet.  
• Do not dispose of your alarm in a fire.  
9.1 FIRE SAFETY HINTS  
Store petrol and other flammable materials in proper containers.  
Discard oily or flammable rags.  
Always use a metal fireplace screen and have chimneys  
cleaned regularly.  
Replace worn or damaged sockets, switches, home wiring  
and cracked or frayed electrical cords and plugs.  
Do not overload electrical circuits. Keep matches away from  
children. Never smoke in bed. In rooms where you do smoke,  
always check under cushions for smouldering cigarettes and  
ashes. Service central heating systems regularly.  
Be sure all electrical appliances and tools have a recognised  
approval label. This device cannot protect all persons at all  
times. It may not protect against the three most common  
causes of fatal fires:  
1. Smoking in bed.  
2. Leaving children at home alone.  
3. Cleaning with flammable liquids, such as petrol.  
Further information can be obtained from the Fire Brigade.  
9.2. PLANNING YOUR ESCAPE ROUTE FOR WHEN THE  
ALARM GOES OFF  
1. Check room doors for heat or  
smoke. Do not open a hot door. Use  
an alternate escape route. Close  
doors behind you as you leave.  
2. If smoke is heavy, crawl out, stay-  
ing close to floor. Take short breaths,  
if possible, through a wet cloth or hold  
your breath. More people die from  
smoke inhalation than from flames.  
3. Get out as fast as you can. Do not  
stop for packing. Have a prearranged  
meeting place outside for all family  
members. Check everybody is there.  
15  
 
4. Call the Fire Brigade from a  
neighbour’s house or mobile phone.  
Remember to give your name and  
address.  
5. NEVER re-enter a burning house.  
10. SMOKE ALARM & RF LIMITATIONS  
10.1 Limitations of Smoke Alarms  
Smoke Alarms have significantly helped to reduce the number  
of fire fatalities in countries where they are widely installed.  
However independent authorities have stated that they may  
be ineffective in some circumstances. There are a number of  
reasons for this:  
• Smoke Alarms will not work if the batteries are depleted or  
if they are not connected. Test regularly and replace the  
entire unit when it fails to operate.  
• Smoke Alarms will not detect fire if sufficient smoke does  
not reach the alarm. Smoke may be prevented from reach-  
ing the Alarm if the fire is too far away, for example, if the  
fire is on another floor, behind a closed door, in a chimney,  
in a wall cavity, or if the prevailing air draughts carry the  
smoke away. Installing smoke alarms on both sides of  
closed doors and installing more than one smoke alarm as  
recommended in this leaflet very significantly improve the  
probability of early detection.  
• The Smoke Alarm may not be heard.  
• Radio link may not work due to interference or the signal  
being blocked by furniture, renovations etc.  
• A smoke alarm may not wake a person who has taken  
drugs or alcohol.  
• Smoke Alarms may not detect every type of fire to give suf-  
ficient early warning. They are particularly ineffective with:  
fires caused by smoking in bed, escaping gas, violent  
explosions. poor storage of flammable rags and/or liquids,  
(for example petrol, paint, spirits etc), overloaded electrical  
circuits, arson, children playing with matches.  
• Smoke Alarms don’t last indefinitely. The manufacturer rec-  
ommends replacement after 10 years as a precaution  
• Use the Smoke Alarm Test Button to familiarise your family  
with the Alarm sound and to practice fire drills regularly with  
all family members. Draw up a floor plan that will show each  
member at least 2 escape routes from each room in the  
house. Children tend to hide when they don’t know what to  
do. Teach children how to escape, open windows, and use  
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roll up fire ladders and stools without adult help. Make sure  
they know what to do if the alarm goes off.  
10.2 Limitations of Radio Frequency Signals  
Ei Electronics radio communication systems are very reliable  
and are tested to high standards. However, due to their low  
transmitting power and limited range (required by regulatory  
bodies) there are some limitations to be considered:  
(i) Receivers may be blocked by radio signals occurring on or near  
their operating frequencies, regardless of the house coding.  
(ii) Radio transceiver equipment, such as the Ei 3100RF / Ei  
3105RF should be tested regularly at least weekly. This is  
to determine, whether there are sources of interference  
preventing communication, that the radio paths have not  
been disrupted by moving furniture or renovations, and so  
generally protect against these and other faults.  
The Ei 3100RF / Ei 3105RF Transceiver has been tested to  
EN 300 220-1 V1.3.1 (200-09) in accordance with the require-  
ments of EN 300 220V1.1.1 (2000-09). These tests are  
designed to provide reasonable protection against harmful  
interference in residential installations. This equipment gener-  
ates, uses and can radiate radio frequency energy and, if not  
installed and used in accordance with the instructions, may  
cause harmful interference to radio and television reception.  
However, there is no guarantee that interference will not occur  
in a particular installation. If this device does cause such inter-  
ference, which can be verified by turning the device on and off  
(by removing the battery) the user is encouraged to eliminate  
the interference by one or more of the following measures:  
(i) Re-orientate or re-locate the unit.  
(ii) Increase the distance between the Ei 3100RF / Ei 3105RF  
and the device being affected.  
(iii) Consult the supplier or an experienced radio/television  
technician.  
11. GETTING YOUR SMOKE ALARM SERVICED  
If your Smoke Alarm fails to work after you have read the sec-  
tions on “Installing your Smoke Alarms”, “Testing and  
Maintaining your Smoke Alarm” and Troubleshooting your  
Smoke Alarms”, then contact Customer Assistance at the  
nearest address given at the end of this leaflet. If it needs to  
be returned for repair or replacement put it in a padded box  
with the battery disconnected.  
Send it to “Customer Assistance and Information” at the near-  
est address given on the Smoke Alarm or in this leaflet. State  
the nature of the fault, where the Smoke Alarm was pur-  
chased and the date of purchase.  
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12. FIVE YEAR GUARANTEE (Limited)  
Ei Electronics, guarantees this smoke alarm for five years  
from date of purchase against any defects that are due to  
faulty materials or workmanship. This guarantee only applies  
to normal conditions of use and service, and does not include  
damage resulting from accident, neglect, mis-use, unautho-  
rized dismantling, or contamination howsoever caused. This  
guarantee excludes incidental and consequential damage.  
This guarantee does not cover costs associated with the  
removal and/or installation of alarms. If this smoke alarm  
should become defective within the guarantee period, it must  
be returned to Ei Electronics, with proof of purchase, careful-  
ly packaged, and with the problem clearly stated. (see  
"Getting Your Alarm Serviced"). We shall at our discretion  
repair or replace the faulty unit.  
Do not interfere with the smoke alarm or attempt to tamper  
with it. This will invalidate the guarantee, but more important-  
ly may expose the user to shock or fire hazards.  
This guarantee is in addition to your statutory rights as a con-  
sumer.  
13. What is the best Smoke Alarm  
Optical or Ionisaton ?  
Both types respond in all standard fires but each type may  
respond faster to particular fires as shown. For dual protection  
install each type.  
Optical Sensor  
Best for slow smouldering fires  
- large smoke particles  
Ion Sensor  
Best for fast flaming fires  
- small smoke particles  
The Home Office (UK) states (in FB2):  
“If your home has more than one floor, at least one alarm  
should be fitted on each level. In this case a combination of  
Optical & Ionisation alarms, preferably interconnected, will  
give best protection”.  
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14. TECHNICAL SPECIFICATION  
Battery: Replaceable 9 Volt Alkaline Duracell  
(MN1604, Energizer 522 or Eveready 522).  
Battery Life: Battery can power unit in standby for over a year.  
Power on Indicator: Red light flashes every 40 seconds.  
Smoke Sensitivity: Meets or exceeds requirements of  
BS5446-1: 2000.  
RF & EMC: Complies with the requirements of the RTTE  
Directive Compatibility 1999/5/EC (RF Performance to  
EN300220-3, EMC to EMC 301489-3).  
Approvals: Approved to BS5446-1: 2000.  
Humidity Range: 15% to 95% RH (non-condensing).  
Audible Alarm: 85dB at 3m (minimum).  
Chamber Fault: The unit checks the sensing chamber  
every 40 seconds, and it beeps if a fault is found (without red  
light flashing at the same time) (Ei3105RF only).  
Radio Frequency: 868.499 MHz (Regulated 1% duty cycle  
band).  
RF Power: +5dBm.  
Range: 150 meters (minimum) in free space.  
Test Button(Ei3100RF):  
Checks smoke sensor, electronics & horn.  
Test/Hush Button (Ei3105RF):  
Checks smoke sensor, electronics and horn. Also silences  
nuisance alarms for 10 minutes and then resets.  
Local Hush Mode (Ei3105RF only): When test/hush button is  
pressed only that unit goes into hush (reduced smoke sensi-  
tivity) and sends out an alarm cancel signal so that all other  
smoke alarms will stop sounding. The other alarms will not  
have reduced sensitivity. The red light will flash every 10 sec-  
onds (instead of the normal 40 seconds) on the unit in hush  
mode.  
Low Battery Indication: Unit beeps and red light flashes  
every 40 seconds.  
RF RECEPTION  
Alarm Signal Reception: Turns on horn (without red light  
flashing on Ei3105RF) for 60 seconds unless it receives an  
alarm cancel signal within that period.  
Duration of House Code Mode: 15 minutes  
19  
 
RF Visual Indicator: On Transmission, Amber LED lights  
continuously for 1.5 to 3.5 seconds while messages are being  
transmitted.  
Size of System: A maximum number of 12 units can com-  
municate together on one system (however the range is like-  
ly to be the limiting factor in many cases)  
Communication: All units will communicate together as  
shipped. After a unit has been house coded it will only commu-  
nicate with other units house coded at the same time. House  
coding is essential to prevent false alarms from  
neighbouring systems.  
Entering House Code Mode: Pressing and holding the  
House Code switch until the amber light comes on and then  
releasing puts the smoke alarm into house code mode.  
House Code Mode: The alarm transmits and receives spe-  
cific codes. The amber light flashes once every 5 seconds for  
each unit’s code it memorises (including itself).  
Clearing House Codes: The house codes memorised can be  
deleted (i.e. the smoke alarms can be uncoded) by pressing  
and holding the House Code switch on for about 6 seconds.  
The amber light will come on and then flash slowly to indicate  
the smoke alarm has been returned to the default factory set-  
tings.  
Ei Electronics  
Shannon Industrial Estate,  
Shannon, Co. Clare, Ireland.  
Telephone: +353 61 471277  
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