Visonic MCT-442 User Manual

MCT-442

Supervised Indoor Wireless CO Gas Detector

1. INTRODUCTION

The carbon monoxide (CO) detector is designed to monitor the
CO gas level in residential dwellings and give early warning
before potentially dangerous levels exist. The CO alarm is
transmitted to the PowerMax+ (version F and up) or PowerMax
Pro and presented on its display.
The CO gas is considered to be a highly dangerous poisonous
gas because it is colorless, odorless, tasteless and very toxic.
Presence of CO gas inhibits the blood's capacity to transport
oxygen throughout the body, which can eventually lead to brain
damage. CO gas is produced by incomplete combustion of fuels
(such as natural gas, propane, heating oil, kerosene, coal,
charcoal, gasoline or wood) that can occur in any device that
depends on burning for energy and heat (such as furnaces,
boilers, room heaters, hot water heaters, stoves, grills and in any
gasoline powered vehicle or engine).
Before CO harmful level is reached, the detector's internal buzzer
beeps sound periodically and the detector's red LED flashes. In
this condition, the buzzer sound can be stopped for 6 minutes by
pressing the TEST/MUTE switch. It will not correct the CO gas
problem, but will temporarily silence the buzzer while you correct
the problem. After 6 minutes, the detector restarts alarm if the CO
level remains high.

The detector provides
low battery and detector
end-of-life indications.

Caution: The detector
expiry date is stamped
on the detector. After
the expiry date, the
detector should not be
used - do not wait for
end-of-life indication!!

The detector is continuously self-tested and has a TEST button
that enables the user to test the detector anytime.

Note: The TEST/MUTE switch functions as TEST switch (in
normal operation) or as MUTE switch (in alarm condition).

The tamper switch actuator (fig. 3), is pressed against the bracket
when the unit is attached to the bracket. Removal of the unit from
the bracket causes the switch contacts to open, creating a tamper
event, which is reported by the transmitter to the alarm system
control panel.

2. SPECIFICATIONS

CO DETECTION
Detection principle: Electrochemical cell
Detector Active Life: 5 years
Selectable Sensitivity:

DIP switch in EN Mode

No warning at 30 ppm for 120 minutes, 50 ppm for 60 minutes,
100 ppm for 10 minutes.

Warning at 50 ppm between 60-90 minutes, 100 ppm for 10-40
minutes, 150 ppm within 3 minutes.

DIP switch in UL Mode

No warning at 30 ppm for 30 days, 70 ppm for 60 minutes, 150
ppm for 10 minutes, 400 ppm for 4 minutes.

Warning at 70 ppm between 60-240 minutes, 150 ppm for 10­50 minutes, 400 ppm between 4-15 minutes.

Audible Alarm Volume: >85db at a distance of 3m (10 ft.).
TRANSMITTER AND CODING

Operating Frequency (MHz): USA/UL - 315, 433, 868.95,

869.2125 or other frequency according to local requirements.
Transmitter's ID Code: 24-bit digital word, over 16 million

combinations, pulse width modulation. PowerCode or Zigbee
Protocols.

Overall Message Length: 36 bits
Supervision: Automatic signaling at 60-minute intervals (315

MHz version), 15-minute interval (433.92, 868.95, 869.2125 MHz
versions) or according to the local standards.
Transmitted Messages: CO gas alarm, low battery, tamper,
sensor end of life, sensor trouble, supervision.
Tamper Alerts: Tamper message is transmitted to the
PowerMax+ / PowerMax Pro control panel when the detector is
removed from its bracket.

ELECTRICAL DATA
Power Source: 9 volt Lithium battery (Ultra Life #U9VL, U9VL-J),

or Alkaline battery, Energizer #522.
Current Drain: For UL: 25 µA standby, 15mA in alarm

For other models: 11 µA standby, 250µA in alarm

Battery Life Expectancy: At least 1 year (for typical use)
Battery Supervision: Automatic transmission of battery status

data as part of any transmitted message.

Visual and Audible Indications:

* Every 5 seconds during the first 4 minutes, every 60 sec. after

** After 6 minutes, the detector restarts alarm if the CO level

Note: Long period of low battery condition may cause improper
function. In case of End-of-Life/Fault indication, replace the
battery and check if the End-of-Life/Fault indication still exists. If it
still exists, stop using the detector.

PHYSICAL DATA
Operating Temperature: 0°C to 40°C (32°F to 104°F).
Relative Humidity: 10-93% ± 2% RH
Dimensions: 127 mm (5 in.) x 40 mm (1-9/16 in.)
Weight (without battery): 180g (6.35 oz)
Compliance with Standard:

Installation Instructions

ALARM

(red) LED

BUTTON

Figure 1 - General View

Condition

Alarm 4 flashes

End of Life
/ Fault

Battery OK - - Flashes once

Low
battery

MUTE
button is
pressed (to
silent the
alarm for 6
minutes)
TEST
button is
pressed

the first 4 minutes.

remains high.

Europe: EN50291, EN 50130-4, EN 300220, EN 301489.
Certified by LPCB (UK)
USA (315MHz): UL2075, CFR47 part 15.

Visual Indication (LEDs)

Red Yellow Green

(*)

- 3

- 1 flash

4 flashes
(*)

1 flash
(the 1st
LED)

- - 4 beeps (*)

flashes
every
60 sec.

every
60 sec.

- - OFF for 6

1 flash
(the 2nd
LED)

- one beep

every minute

- one beep

Flashes (the
3rd LED) If
CO circuit test
and battery
are OK - lights
during 2 sec.

Audio

Indication

every 60 sec.

every 60 sec.

minutes (**)

1 beep

Battery

(green) /

Fault

(yellow)

LED

TEST /

MUTE

-

D-300273 1

3. PREPARATIONS

3.1 Disassembly

BRACKET

1

Hold the

bracket with

one hand

Figure 2. Separating the Detector from Its Bracket

DETECTOR

2

Rotate the
detector as
shown and
pull it from
the bracket

3.2 Communication Format Selection

Select the desired communication format, EN or UL, by switch 1
(see figure 3). Note: Switch 2 is not used.

3.3 Enrolling the Detector ID

Insert battery (see figure 3).

4. INSTALLATION

4.1 Mounting

The detector can be mounted on a wall or ceiling. For EN
approved sites, only ceiling installation is allowed.
It must be mounted with its bracket (when it is attached to its
bracket the tamper switch is pressed and the detector automatic
reset is performed).

!

Warnings

• Installation must be performed by a qualified individual. Failure

to properly install, test and maintain a CO detector may cause
it to fail, resulting in loss of life!

• Installation of the CO detector should not be used as a substitute

for proper installation, use and maintenance of fuel burning
appliances, including appropriate ventilation and exhaust systems.

• Unauthorized removal of the unit from the bracket will initiate a

tamper alert!

!

Warning - The battery must be inserted into the

detector otherwise you will not be able to close the detector.

4.2 Test

A. Local Test

Press the test button (see fig. 1) until the built-in buzzer sounds 1
beep and the red, green and yellow LEDs flash sequentially (see
section 2 - SPECIFICATION). This means that the local test is
successful. If additional or other signals exist, refer to section 2 ­SPECIFICATION.

5. MAINTENANCE

!

Warning: Press the detector's TEST button once every

week to ensure proper operation of the detector.

APPENDICES

Open battery cover and

9 volts

Battery cover

The ID of the detector's transmitter must be enrolled in the alarm
control panel memory. Refer to the alarm control panel’s installation
instructions and follow the procedure given there for enrolling
detector's transmitter ID in the control panel's memory.

When you are required to initiate a transmission for enrollment,
press the tamper switch (see fig. 3).

Note: It is much easier to carry out this operation while holding
the detector in your hand, close to the control panel.

!

WARNING: The test switch is the only proper way to test the

CO detector. Never use vehicle exhaust! Exhaust may cause
permanent damage and void your warranty.

B. Communication Test

Create a tamper alarm at the installation location and verify that
tamper message is received by the control panel / receiver.

Figure 3. Detector Rear Side

connect the battery to its
terminals (without insulator).
Verify proper polarity.

Red button

Tab (1 of 4)

Function selector:
Sw. 1 ON = UL
Sw. 1 OFF = EN

Tamp e r swi t c h

actuator

2

Mark and drill 2 holes in
mounting surface. Fasten
the bracket to the mounting
surface with 2 screws.

1

Locate the bracket on
mounting surface so
that the word “UP” is
located as shown (so
that the detectors
stickers text will be
easily readable)

When low battery alarm exists (see specifications) immediately
replace the battery (see figure 3).
Once a month, use vacuum cleaner to clean the air vents
occasionally, to keep them free of dust.

UP

Align detector’s tabs (see figure 3) with the bracket
slots and rotate the detector as shown. Pull the
detector outward to verify that it is securely attached.

Figure 4. Mounting

3

Appendix A - CO Detector Installation Overview

A-1. Selecting Installation Location

Selecting a suitable location is critical for the CO detector. The
Consumer Product Safety Commission (CPSC) recommends to
use at least one CO detector per household, located near as
possible to sleeping area of the home, because the human body
is most vulnerable to the CO gas effect during sleeping hours.
For added protection, install additional CO detector in every separate
bedroom and on every level of your home. If your bedroom hallway is
longer than 14 meters (40 feet), install a CO detector at BOTH ends
of the hallway. Install an additional detector 6 meters (20 feet) away
from the furnace or fuel burning heat source.

2 D-300273

For maximum
protection, the
detector should
be also located
outside primary
sleeping areas or
at each level of
your home. Mount
the detector on a
firm wall or ceiling
(see par. 4.1).

BEDROOM

BEDROOM

LIVING

CO DETECTOR

Figure 5. CO Detectors locations in a Multi-

ROOM

Floor Residence

BASEMENT

BEDROOM

KITCHEN

GARAGE