Specifications

2 D-301296
3.3 Definitions of LED Light and Buzzer
The red and yellow LED light and buzzer turn on and/or off to
indicate the following conditions:
A. When the red LED blink once every 30 seconds, this means
power on, i.e., the detector is energized.
B. When the red LED flashes and the buzzer beeps intermittently,
this means alarm for potential smoke hazard.
C. When the red LED flashes together with buzzer beeps every 30
seconds, this means battery power is low.
D. When the buzzer sounds every 30 seconds, in the middle of red
LED flashing interval, it indicates degraded chamber sensitivity
(the smoke detector must be cleaned).
E. The yellow LED turns on each time an RF signal is transmitted
to the control panel.
3.4 Battery Connection and Initial Test
Attention: The detector battery cover is fitted with a red button that
prevents the detector from locking onto bracket if there is no battery
inside.
The smoke detector is supplied with a 9V battery seated within its
holder but insulated from the battery terminals.
Battery cover
Function selector
Open battery cover and
connect the battery to its
terminals (without
insulator). Verify proper
polarity. Verify proper
polarity.
Tamper switch
actuator
Tab (1 of 4)
Red button
Figure 3. Smoke Detector Rear Side
Note: When the battery first makes contact, the alarm horn may
sound for one second. This indicates that the battery is
connected properly.
Close the cover, then press the test button (see fig. 1) for about 5
seconds until the horn sounds two sequences of a loud 3-beep
alarm. This means that the smoke detection section is
working properly.
3.5 Resetting the Transmitter Module
and Enrolling its PowerCode ID
A rear tamper protection switch is mounted under the PC board.
The tamper switch actuator, extending through a hole in the base
(see Figure 3), is pressed against the bracket when the unit is
attached to the bracket.
Removal of the unit from the bracket will cause the switch contacts
to open, creating a tamper event, which will be reported by the
transmitter to the control panel.
Refer to the control panel’s installation instructions and follow the
procedure given there for enrolling transmitter IDs in the control
panel's memory.
When required to initiate a transmission for enrollment, press the
smoke detector’s test button (see fig. 1) until the built-in horn
sounds, or press the tamper switch.
Note: It is much easier to carry out this operation while holding
the MCT-425 / MCT-425C in your hand, close to the control
panel.
3.6 Mounting
Note: In Canada, detectors are to be installed in accordance with
the Standard for Installations of Fire Alarm Systems CAN/ULC-
S524-01, in accordance with the Canadian Electrical Code, Part I
and in a manner acceptable to the local authority having
jurisdiction.
1
Mark and drill 2 holes in
the mounting surface.
Fasten the bracket to the
mounting surface with 2 screws.
2
Align detector’s tabs (see fig. 3)
with the bracket slots and rotate
the detector as shown. Pull the
detector outward to verify that it
is securely attached.
BRACKET DETECTOR
slot
slot
Figure 4. Mounting
Notes
1. A battery must be inserted into the detector before the
detector can be mounted onto the bracket.
2. Unauthorized removal of the unit from the bracket will initiate
a tamper alert!
3.7 Test
Press the test button (see fig. 1) until the built-in horn sounds.
Verify that the transmitted signal has been received at the control
panel, and that the control panel responds accordingly by
activating the fire alarm siren or any other warning device.
4. SMOKE DETECTOR INSTALLATION OVERVIEW
4.1 Where to Install Smoke Detectors
Smoke detectors should be installed in accordance with the
NFPA Standard 72 (National Fire Protection Association,
Batterymarch Park, Quincy, MA 02169). For complete coverage
in residential units, smoke detectors should be installed in all
rooms, halls, storage areas, basements and attics in each family
living unit. Minimum coverage is one detector on each floor and
one in each sleeping area. For maximum protection, a smoke
detector should be located outside primary sleeping areas or on
each level of your home. Here are a few useful tips for you:
• Install a smoke detector in the hallway outside every separate
bedroom area, as in Figure 5. Two detectors are required in
homes with two bedroom areas, as in Figure 6.
• Install a smoke detector on every floor of a multi-floor home or
apartment, as shown in Figure 7.
• Install a minimum of two detectors in any household.
• Install a smoke detector inside every bedroom.
• Install smoke detectors at both ends of a bedroom hallway if
the hallway is more than 12 meters (40 feet) long.