2
DE3642
A.
Connect the snap-on battery clip to the battery terminals.
The
clip will not fit if the contacts are reversed, but take care
not to make a prolonged reverse contact - the battery will
discharge rapidly through the built in protection diode!
Note:
When the battery first makes contact, the alarm horn may
sound for one second. This indicates that the battery is
connected properly.
B.
Push the battery firmly in until it is seated tightly within the
holder, with the snap-on clip pressed against the contact
springs.
C.
Close the cover, then press the test button 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.
2.5 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 4), 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.
Battery cover
Figure 4.
Rear Tamper
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 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 in your hand, close to the control panel.
2.6 Mounting the Bracket in Place
Read Section 4 in this manual first, then decide where to install a
detector. Refer to Figures 5 and 6 and proceed as follows:
Figure 5.
Aligning the Bracket
Figure 6.
Mounting the Bracket
A .
At the location where you intend to install the detector, draw a
horizontal line six inches long.
B .
Remove the mounting bracket from your unit by rotating it
counterclockwise (see Figure 2).
C.
Place the bracket so that the two longest hole slots are
aligned on the line. in each of the keyhole slots, draw a mark
to locate a mounting plug and screw as in Figure 5.
D.
Remove the bracket.
E.
Using the appropriate size drill, drill two holes at the marks
and insert wall plugs.
F.
Using the two screws and wall plugs (all supplied), attach the
bracket to the wall (see Figure 6).
2.7 Final Assembly and Test
Note:
Unauthorized removal of the unit from the bracket will
initiate a tamper alert!
A.
Press the test button 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.
B.
Attach the detector to the bracket as shown in Figure 7. Pull
outward to make sure that the detector is securely attached to
the bracket.
Note:
A battery must be inserted into the detector before the
detector can be mounted onto the bracket.
Figure 7.
Final Assembly
3
33
3. SPECIFICATIONS
. SPECIFICATIONS
. SPECIFICATIONS
. SPECIFICATIONS
SMOKE DETECTOR
Detection Sensitivity:
2.66 ±1.11 %/ft obscuration
Alarm Sound Level:
85 dB at 3 m (10 feet)
TRANSMITTER AND CODING
Operating Frequency (MHz):
315, 433.92, 868.95, 869.2625 or
other frequency according to local requirements.
Transmitter's ID Code:
24-bit digital word, over 16 million
combinations, pulse width modulation.
Overall Message Length:
36 bits
Supervision:
Automatic signaling at 60-minute intervals (US
version), 15-minute interval (UK version) or according to the local
standards.
Tamper Alerts:
Tamper event (removal of the unit from its bracket)
is reported once, until the tamper switch is restored.
Transmission Indicator:
Yellow LED lights upon transmission
(visible only when Switch SW-1 is ON).
ELECTRICAL DATA
Power Source:
9 Volt alkaline or lithium.
Operation Voltage:
From 7.2 V to 9.5 V.
Current Drain:
28 µA standby, 20 mA in operation
Battery Life Expectancy:
Alkaline:
at least 1 year (for typical use)
Lithium:
at least 2 years (for typical use)
Battery Supervision:
Automatic transmission of battery status
data as part of any transmitted message.
Audible Low Battery Warning:
Built-in horn beeps once a
minute for
up to 30 days when the battery voltage drops.
PHYSICAL DATA
Operating Temperature:
0
°
C to 37.8
°
C (32
°
F to 100
°
F).
Relative Humidity:
10% to 85%
Dimensions:
130 mm (5.12") x 75 mm (2.95")
Weight (including battery):
272 g (9.6 oz)
❷
Attach to
Bracket
❸
Rotate
Clockwise
TAMPER SWITCH ACTUATOR
Align Tabs
With Slots
❶
BRACKET
DETECTOR
