2 D-302151 MCT-426, MCT-427 Installation Instructions
3.2 Audible and Visual Indications
The dual color LED and buzzer are used to signal various alarm and
trouble messages as shown in Table 1 below:
Table 1. Visual and Audible Indications
Condition
Visual Indication (LEDs) Audio
Indication
Red Yellow
Smoke alarm Flash every
500ms
- 3 long beeps every
4 sec.
Heat alarm(***) Flash every
500ms
- Long beep every
2 sec.
Tamper
alarm(*)
- - Long beep every
2 sec.
Standby Flash every 30
sec.
- -
Low battery Flash every 30
sec.
- Short beep every
30 sec.
Smoke sensor
trouble
Flash every 60
sec.
3 Flashes every
60 sec.
Short beep every
60 sec.
Low sensitivity
alarm
Flash every 30
sec.(**)
- Short beep every
30 sec.
Heat sensor
trouble(***)
Flash every 60
sec.
5 Flashes every
60 sec.
Short beep every
60 sec.
Need to clean 2 flashes every
30 sec.
- 2 short beeps
every 30 sec.
Test See par. 3.7
* The tamper alarm will mute for 3 minutes at first power on, and
will revert to normal mode when the tamper switch condition is
changed.
** Delay of 15 sec. between buzzer beep and LED operation
*** MCT-427 only
3.3 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 3V CR123A / CR17450 battery.
Battery connection for both types of batteries is illustrated in Figure 3a
and 3b below.
Battery cover
Open battery cover and
connect the battery to its
terminals (without
insulator). Verify proper
polarity.
3 volts CR123A
Tampe r
switch
Transmission
LED ON/OFF
button
Figure 3a. Battery Connection for CR123A
Battery cover
Open battery cover and connect the battery to its terminals.
3 volts CR17450
Tamper
switch
Transmission
LED ON/OFF
button
Figure 3b. Battery Connection for CR17450
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, (for further details see par. 3.6).
3.4 Resetting the Transmitter Module
and Enrolling its PowerCode ID
The detector has a wall / rear tamper switch to alert removal of
detector. 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-426 / MCT-427 in your hand, close to the control panel.
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