DE3642
1
MCT
MCT
MCT
MCT-425
-425
-425
-425
Supervised Wireless PowerCode Smoke Detector
Installation Instructions
1. DESCRIPTION AND APPLICATIONS
The MCT-425 is photoelectric smoke detector designed to sense
smoke, but not gas, heat or flame and fitted with a Power-
Code-type UHF transmitter. It provides early warning of developing
fire by sounding an alarm with its built-in alarm horn, and by
transmitting a coded alarm signal to a PowerCode receiver or to a
compatible wireless alarm control panel.
It must be borne in mind, though, that effective pre-warning of fire
accidents is only possible if the detector is located, installed and
maintained properly as described in this manual.
WARNING:
This smoke detector is designed for use in a single
residential unit only, which means that it should be used inside a
single family home or apartment. It is not meant to be used in
lobbies, hallways, basements or another apartment in multi-family
buildings, unless there are already working detectors in each
family unit. Smoke detectors, placed in common areas outside
the individual living unit, such as on porches or in hallways, may
not provide early warning to residents. In multi-family buildings,
each family living unit should obtain its own detector.
WARNING:
This detector is not meant
to be used in non-residential buildings.
Warehouses, industrial or commercial
buildings and special purpose non-
residential buildings require special fire
detection and alarm systems. This
detector alone is not a suitable
substitute for complete fire detection
systems for places where many
people live or work, such as hotels or
motels. The same is true of
dormitories, hospitals, nursing homes
or group homes of any kind, even if
they were
Figure 1.
General View
once single family homes. Please refer to NFPA 101, the Life
Safety Code, NFPA71, 72A, 72B, 72C, 72D and 72E for smoke
detector requirements for fire protection in buildings not defined as
"households".
WARNING:
This detector, if used as a stand-alone unit, will not
alert people who are hard of hearing.
2
22
2. INSTALLATION SUMMARY
. INSTALLATION SUMMARY
. INSTALLATION SUMMARY
. INSTALLATION SUMMARY
2.1 Disassembly
Separate the unit from its mounting bracket as shown in Figure 2.
Figure 2.
Separating the MCT-425 from its Bracket
2.2 Setting the Function Switch
The MCT-425 has a 4-position DIP switch function selector (see
Figure 3). The switch levers are numbered 1 to 4, and each switch
allows you to select one of two options
.
Set the function switches as desired. The ON position is indicated
on the switch body.
Table 1.
Function selector settings
Sw-
Marking
Pos.
Selected Option
Default
SW-1
LED
ON
OFF
LED will light upon transmission
LED is disabled
ON
SW-2
RST
ON
OFF
“Restore” events reported
“Restore” events not reported
ON
SW-3
TRR
ON
OFF
Do not use!
Always OFF
OFF
SW-4
BAT
ON
OFF
Do not use!
Alkaline or Lithium battery is
being used
OFF
Battery cover
Figure 3.
Function Selector and Battery Cover
2.3 Definitions of LED Light and Buzzer
The red and yellow LED light and buzzer turn on and/or off to
indicate various situations. There are several LED light and
buzzer operations.
A.
When the red LED flashes 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 for every
30 seconds with temporal tone 0.5 second on and 0.5 second
off intermittently, this means
battery power is low
.
D.
The yellow LED turns on every time an RF signal is transmitted
to the control panel.
2.4 Battery Connection and Initial Test
CAUTION: The MCT-425 is fitted with cover latches that will
prevent the cover from closing 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.
BRACKET
DETECTOR
❷
Rotate Unit
Counter-
Clockwise
❶
Seize Bracket
❸
Pull Away
From
Bracket
Test
Button
TAMPER
