User Manual
Model: RFMDUAL
Flush Mount Dual 240V Mains Powered or
10 Year Lithium Battery Photoelectric Smoke
Alarm (RF Module Optional)
INTRODUCTION
IMPORTANT: If you are installing this product for use by others, you must leave this
manual (or a copy of it) for the end user.
Add the RF module (RFMOD) to this smoke alarm to enable wireless connection with
other RF wireless alarms/products from Red Smoke Alarms.
RFMDUAL is a photoelectric flush mount smoke alarm that provides versatile
functionality. It can serve as a 240V mains powered alarm with a 10-year lithium battery
backup. It can also be interconnected with other 240V Red smoke/heat alarms or
function as a standalone 10-year lithium battery smoke alarm with the option for wireless
interconnection using an RF module. The alarm is designed for convenient installation
with a 90mm cut out hole.
The flush mount design of the smoke alarm ensures that it remains level with the ceiling,
providing both effective protection and a discreet appearance.
SPECIFICATION
Power Source:
220-240V, 50Hz
10 Year 3V Lithium Battery (As mains power source or as
backup battery)
Operating Current:
≤48 mA
Sensing Type:
Type A Photoelectric smoke alarm - contains NO radioactive
material
Temperature Range:
0°C to 45°C
Humidity Range:
5% to 95% (non-condensing)
Interconnecting:
40 alarms wires over 150 metres maximum
Sound Level:
> 85dB at 3 metres minimum
Alarm Condition:
Audible signal pattern (ISO 8201)
Visual Indicators:
Green LED for mains power ON
Red LED for pairing, warning and low battery indication
Cut-out Hole Size:
Ø90mm
Protrusion from ceiling: 31mm
Approval:
AS 3786:2014
Maximum Lifespan:
10 years
IMPORTANT: READ ALL INSTRUCTIONS BEFORE INSTALLATION. NO USER
SERVICEABLE PARTS INSIDE THIS SMOKE ALARM.
Do not attempt to repair the smoke alarm yourself.
BATTERY
This smoke alarm offers two power options: It can be powered either by a sealed-in 3V
non-replaceable lithium battery or by connecting it to AC mains power. If the smoke
alarm is connected to AC mains power, the lithium battery acts as a backup power
source that automatically activates in the event of an AC power failure. The lithium
battery is specifically designed to provide power for up to 10 years, ensuring continuous
functionality during extended power outages.
Under normal operating conditions, the 3V non-replaceable battery has an estimated
lifespan of 10 years, eliminating the need for frequent battery replacements. However, it
is still recommended to regularly test the smoke alarm to ensure proper functioning.
• In areas where bugs or insects are present, address the issue before installing the
smoke alarm. Although all smoke alarms built since 1985 are designed to prevent bugs
from entering the detection chamber, bugs may still build up on chamber openings and
prevent smoke from entering. If bugs are present, vacuum the unit frequently as
described in the maintenance section.
• Within one metre of a fluorescent or compact fluorescent lamp, as electrical "noise"
may cause nuisance alarms.
INSTALLATION - WIRED CONNECTION
1
2
Remove the Terminal Cover
To install the hardwire and connect
Use an insulated screwdriver to
the terminals on the Flush Mount
press the lock on the Flush
Base, break the side knockout.
Mount Base. See Fig.5.
See Fig.5.
Terminal
Fig.5
Cover
Press the lock on the Flush Mount Base
Break the side knockout.
INSTALLER PLEASE NOTE:
• WARNING: Please ensure to disconnect the mains power from the circuit.
• Prior to connecting the mains power, ensure wiring polarity is correct.
• This smoke alarm is designed for flush mounting only.
WIRING INSTRUCTIONS:
• This smoke alarm can be interconnected with other Red alarm devices including
R240, R240RC, RHA240SL. Connecting this smoke alarm to other brands or models
may result in potential damage or create risks such as electric shock or fire hazards.
• Up to 40 smoke alarms can be interconnected.
• The supply terminal block of the alarm consists of four labeled terminals: Interconnect,
N, E/LOOP, and A. It is essential to ensure proper wiring to ensure the alarm functions
correctly. Incorrect wiring can lead to damage to the unit and will void the warranty.
For guidance on the appropriate wiring, please refer to the provided wiring diagrams.
• The maximum length of wire used in interconnecting smoke alarms should not exceed
150 metres, and the spacing between interconnected smoke alarms must not exceed
30 meters per alarm. The minimum wire cross-section is 1.00mm
smoke alarms must be connected to the same final sub-circuit.
• Do not use any wire that may be confused with normal house wiring for the
interconnect wire, such as green/yellow earth wire.
• Do not connect AC power wires to the Interconnect terminal, as this may damage
smoke alarms.
• Do not connect the Interconnect wire to any device other than the Interconnect
terminal of another Red alarm devices including R240, R240RC. Otherwise, the
RFMDUAL will be damaged.
• Smoke alarms should be interconnected only within the confines of a single-family
living unit. Interconnecting smoke alarms between different units may result in
excessive nuisance alarms. Residents may not be aware that smoke alarms are being
tested or that the alarm is a nuisance caused by cooking, etc.
CAUTION - EQUIPMENT INSTALLATION HAZARD
• Red LED flashes very quickly (3 times per second) without sound. This means neutral
connection is missing or wiring is incorrect.
• Please check wiring and connection of smoke alarms with flashing red LED and rectify
wiring issue immediately.
Alarm Ring:
Alarm Unit:
TEST/HUSH/
RF-PAIRING
Red
BUTTON
LED
• An optional RF Module (RFMOD) can be purchased separately if wired connection is
not possible.
• Alternative Energy Sources - (Wind, Solar, UPS etc.) This product is designed to be
connected to a Pure or True Sine Wave 230V AC supply.
• It should not be connected to a power source that utilises an inverter, e.g. PV solar
panel, the Total Harmonic Distortion (THD).
• Light Dimmer Circuits – The alarm must not be powered from a light dimmer circuit
MOUNTING INSTALLATION
Prior to mounting the smoke alarm, it is important to carefully review the following
instructions. The smoke alarm comprises of two sub-assemblies: the Flush mount base
assembly and the alarm unit. Red recommends setting aside the alarm unit, which is
enclosed in a plastic dust cover, until the building commissioning phase. This phase
typically includes tasks such as sanding, painting preparation, painting, and flooring.
Please follow these steps to mount the smoke alarm:
KNOCKOUT
1. Choose a suitable location on the ceiling for the smoke alarm.
2. Cut a Ø90mm hole in the ceiling.
3. Strip the Active, Neutral, and Interconnect (if used) wires as per the strip length
shown in Fig.6.
4. Remove the terminal cover to access the terminals.
5. Connect the wires to the appropriate terminals on the flush mount base, as
illustrated in Figure 6. Ensure that the screws are securely tightened.
Note: Never connect multiple RFMDUAL with RF Modules and hard wire
interconnection together.
Please note that the interconnect terminal of the RFMDUAL is solely intended for
hard wire connection directly to other smoke alarms and/or heat alarms.
6. Reattach the terminal cover.
7. Insert the flush mount base into the hole and tighten the two screws to clamp the
base onto the ceiling, as shown in Fig.8.
8. Please note that the alarm unit should not be removed from the plastic dust cover.
Fig.6
Interconnecting Smoke Alarms
. Interconnected
2
Interconnect
Netural
Earth
Active (Live)
10mm
Follow National/State Electrical Codes and any local state
legislation requirements. Cable sizing must be in
accordance with AS/NZS 3000:2018 wiring regulations and
40mm
adhere to state regulations a minimum of 1.0mm2 250 V.
Interconnect cable on alarms must be SDI cable. (No 4core/
aircon wire to be used) Failure to follow will void warranty.
DIAGRAM
Ø
130mm
Alarm Unit: 65.7mm
Ø
110mm
Fig.1
Fig.2
Green
LED
Fig.3
Ring (Optional)
1
Terminal Cover
2
Flush Mount
Base
3
RF Module
Model: RFMOD
(Sold Separately)
4
Alarm unit
Active / Line
Earth or Loop
Neutral
Interconnect
RECOMMENDED LOCATION OF ALARMS
• Install at least one alarm for each bedroom
• Install at least one alarm to protect any stairway
• Install at least one alarm on every floor level.
• Install an alarm in every room where a smoker sleeps as additional protection.
• Install an alarm in every room where electrical appliances are operated (i.e. portable
heaters or humidifiers) as additional protection.
• Install an alarm in every room where someone sleeps with the door closed as
additional protection. The closed door may prevent the alarm from waking the sleeper.
• When mounting an alarm on the ceiling install it at a minimum of 300mm from the side
wall and 500mm max. from any corner (see diagram).
• When mounting an alarm on a wall, install it at a minimum of 300mm from the ceiling
level but not more than 500mm from the ceiling level and any corner (see diagram)
• When mounting an alarm at the apex of a sloping ceiling it should be located a
minimum of 500mm from the apex but should not exceed 1500mm (see diagram).
CEILING / WALL
APEX OF
JUNCTION
SLOPING
300mm min
CEILING
CEILING
DEAD AIR
HEAT &
SPACE
SMOKE
FROM
FIRE
BEST
NEVER
HERE
HERE
NEVER HERE
SIDE WALL
SINGLE FLOOR
BEDROOM
W/C
BATH
LOUNGE ROOM
BD/RM
KITCHEN
BEDROOM
BEDROOM
KITCHEN
DINING
RUM PUS
Recommended locations
AVOID THESE LOCATIONS
Avoid installing the smoke alarm in the following locations:
• Within one metre of heating or cooling supply vents, return air or fresh air vents, as
smoke may be blown away by the supply vents or diverted into the return air vent,
leading to improper alarms.
• In areas where the temperature may fall below 0°C or rise above 45°C, as smoke
alarms are designed to operate safely only within these temperature ranges. Operating
outside these limits may result in failure to alarm, improper alarms, or nuisance alarms.
• In damp or very humid areas, such as bathrooms with showers, where humidity levels
may rise above 95%. Above this level, moisture may condense inside the smoke
chamber, causing false alarms. Additionally, the smoke alarm may become unstable
below 5% relative humidity.
• In areas where particles of combustion are present, such as garages or kitchens, as
this can cause false alarms.
• In dusty or dirty areas where an installation cannot be relied on. An accumulation of
dust and dirt in the sensing chamber may block the openings and prevent an alarm or
cause false alarms. If a smoke alarm is required in such an area, vacuum it frequently
and test it according to the "Operation and Testing" section.
• In the dead air space in the corner where the wall meets the ceiling. If unsure about the
exact location of mounting, contact the local fire department for assistance in choosing
a safe location.
DUST COVER
The smoke alarm is packaged in a plastic dust cover for the following reasons:
1. To safeguard the alarm unit from dust during the building construction phase.
2. Red Smoke Alarms recommends keeping the alarm unit (in the dust cover) aside until
the building commissioning phase to prevent it from getting dusty.
During commissioning, remove the dust cover and attach the alarm unit to the flush
mount base assembly. After removing the dust cover, please store it away from infants
and young children to prevent the risk of suffocation.
ACTIVATE THE SMOKE ALARM
STEPS TO ACTIVATE THE SMOKE ALARM:
1. Remove the alarm unit from the dust cover.
2. Insert the RF module into the alarm unit for wireless interconnection (optional).
SEE SECTION - RF WIRELESS INTERCONNECTION FOR FURTHER DETAILS.
3. Insert the alarm unit into the Flush Mount Base as shown in figure 7. Check the
direction of the Electrical Plate conductor on the alarm unit. Ensure the four electrical
plate could insert to the Electrical Plate Contact at the flush mount base.
4. Push the alarm unit firmly until it latches (clicks) onto flush mount base.
5. Turn on mains power and check the green and red LED function. The green LED
should glow to show main power present. The red LED will pulse every 48 seconds
(approximate) to indicate correct operation.
6. Hold the Test/Hush button for 1 seconds to check that the alarm works.
WARNING: Clipping the Electronic Unit in the base will activate the battery. The
battery has been designed to have a lifespan of 10 years in normal working
condition.
Flush Mount Base
Front view of
Alarm Unit
Electrical Plate Contact
Electrical Plate Conductor
When the toggle position is engaged,
it signifies that the unit is not securely
fastened to the ceiling. In this state, it
is not possible to install the alarm unit.
Ceiling Clamp not
securely fastened
DEAD
AIR SPACE
BEST
BEST
HEAT & SMOKE
HERE
HERE
FROM FIRE
HALL
BD/RM
TYPICAL
MULTIPLE FLOOR
INSTALLATION
LOUNGE
ROOM
Fig.4
Back view of
Alarm Unit
Fig.7
Toggle position
indicates the alarm unit
is clamped onto ceiling.
Fig.8
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