CM-E1
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Macurco Security Series Detectors
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CM-E1 Carbon Monoxide Detector
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CM-E1 Carbon Monoxide Detector
The CM-E1 is a low voltage detector of Carbon Monoxide. The CM–E1
is designed for connection to UL Listed Fire Alarm/Burglary Control
Panels. The CM-E1 is intended for non-hazardous locations such as
residences, retail stores, office buildings, and institutional buildings
 The CM-E1 is not intended for use in industrial
applications such as refineries, chemical plants and or
for use in parking garages as to control exhaust fans
 The small, low profile unit is in a white plastic case. It
surface mounts to a wall using the supplied rear housing
or flush mounts in a 2 x 4 x1-1/2 inch deep single gang
switch or handy electrical box
 Can be Field Tested with Carbon Monoxide Gas
 900 square feet coverage
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CM-E1 Carbon Monoxide and Hydrocarbon Fuels
The usual sources of Carbon monoxide are defective heat sources
such as furnaces or wood burning stoves and automobiles running in
adjoining garages. The CM-E1 can detect CO from these sources, as
well as any other sources of CO
 Detector alarms at multiple levels
of exposure to carbon monoxide
based on time weighted averages
of the gas present
 Listed to UL standard 2075 for the
Standard For Safety for Gas and
Vapor Detector and Sensors
 Tested to UL 2075 using UL 2034
Sensitivity limits for carbon
monoxide gas
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CM-E1 Carbon Monoxide and Hydrocarbon Fuels
Carbon monoxide is colorless, odorless gas
resulting from the incomplete combustion of
hydrocarbon fuels. Carbon monoxide interferes with
blood's ability to carry oxygen to the body's tissues
and results in numerous adverse health effects
 Carbon monoxide is an odorless, colorless and
toxic gas. Because it is impossible to see, taste or
smell the toxic fumes, CO can kill you before you
are aware it is present
 At lower levels of exposure, CO causes mild effects
that are often mistaken for the flu. These symptoms
include headaches, dizziness, disorientation,
nausea and fatigue
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CM-6 Carbon Monoxide and Hydrocarbon Fuels
CO Level in Air
Health Effects
0 ppm
Fresh Air
100 ppm
Slight headache after 1‐2 hours.
200 ppm
Dizziness, headache, nausea after 2‐3 hours.
400 ppm
Dizziness, headache, nausea after 1‐2 hours / life threatening after 3 hours.
800 ppm
Dizziness, headache, nausea after 45 minutes, unconscious after 1 hour, death within 3 hours.
1,600 ppm
Dizziness, headache, nausea after 20 minutes, death within 2 hours.
3,200 ppm
Dizziness, headache, nausea after 10 minutes, death within 60 minutes.
6,400 ppm
Dizziness, headache, nausea after 1‐2 minutes, death within 30 minutes.
12,800 ppm
Instantaneous effects, death within 3 minutes.
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CM-E1 Carbon Monoxide and Hydrocarbon Fuels
The CM-E1 continuously monitors the ambient air at the sensor. If the
CM-E1 measures levels of CO greater than the danger level, the RED
light will turn on, the Alarm Relay will switch to actuate the alarm
circuits in the control panel, and the buzzer on CM-E1 will sound.
 The CM-E1 is programmed to alarm if the danger
levels of carbon monoxide are exceeded, which
are time and concentration-related.
 The alarm points are in accordance with the
provisions of UL 2034:
 70 ppm of CO after 60 to 240 minutes
 150 ppm of CO after 10 to 50 minutes
 400 ppm of CO after 4 to 15 minutes
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CM-E1 Carbon Monoxide Detector
The CME1-FTG is an 11L 500 ppm Aerosol Carbon Monoxide Field
Test Gas. This field test gas allows installers to do a Functional Test
of the CO sensor. The flow rate of the CME1-FTG is 10 LPM providing
enough gas to quick test 20-30 CM-E1 Carbon Monoxide sensors
 Quickly press the TEST/RESET button 5 times.
The buzzer will do a quick double beep and the
LED will flash Amber alternating with a pause
 Aim the nozzle of the aerosol can at the buzzer
grate area and press for 4 to 5 seconds
 Wait for a few seconds. The LED should blink
Green rapidly and the buzzer should double beep
every 15 seconds - Pass
 Press the button once to return to normal mode
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GD-2B Combustible Gas Detector
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GD-2B and Heating Gases: Propane and Methane
The GD-2B is a low voltage electronic detector of combustible, heating
type gases designed for connection to Fire Alarm/Burglary Control
Panels. This product is for use in ordinary indoor locations of family
living units and office workspaces.
 The GD-2B is intended for installation in buildings in nonhazardous locations such as residences, retail stores,
office buildings, and institutional buildings
 The small, low profile unit is in a white plastic case. It
surface mounts to a wall using the supplied rear housing or
flush mounts in a 2 x 4 x1-1/2 inch deep single gang switch
or handy electrical box
 Can be gas tested by directing gas from an unlit butane
cigarette lighter into the detector through the vent holes
 900 square feet coverage
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GD-2B and Heating Gases: Propane and Methane
Gas boilers, furnaces, water heaters, clothes dryers, fireplaces and
stoves are usual sources of gas leaks. The GD-2B can detect gas from
these sources, as well as any other sources of combustible gas
 Designed to meet UL standard 2075 for the Standard
For Safety for Gas and Vapor Detector and Sensors
 Sensitivity based on UL 1484 Standard for Residential
Gas Detectors - Alarm set point: 25% LEL
 Test & Reset switch conducts internal tests and
actuates alarm relay
 Solid State Electronic sensors: no maintenance or
recalibration
 Can be self-restoring or latching
 Optional Buzzer: Produces repeating loud tone bursts
during alarm, and chirps if sensor trouble is found
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GD-2A Combustible Gas Detector
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GD-2A and Heating Gases: Propane and Methane
The GD-2A is a low voltage electronic detector of combustible, heating
type gases designed for connection to UL Listed Fire Alarm/Burglary
Control Panels. This product is for use in ordinary indoor locations of
family living units and office workspaces.
 The GD-2A is intended for installation in
buildings in non-hazardous locations such as
residences, retail stores, office buildings, and
institutional buildings
 Can be gas tested by directing gas from an
unlit butane cigarette lighter into the detector
near the left hand side through one of the
vent holes
 900 square feet coverage
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GD-2A and Heating Gases: Propane and Methane
Gas boilers, furnaces, water heaters, clothes dryers, fireplaces and
stoves are usual sources of gas leaks. The GD-2A can detect gas from
these sources, as well as any other sources of combustible gas
 Listed to UL Standard 2075 for the Standard for
Safety for Gas and Vapor Detector and sensors
 Sensitivity tested based on UL 1484 Standard
for Residential Gas Detectors
 Alarm set point: 25% LEL
 Can be self-restoring or latching
 The three part plastic case allows the GD-2A to
be either surface mounted or installed over a
four-inch square or double gang electrical box,
providing a near flush mount
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Heating Gases: Propane and Methane
Propane also known as Liquefied Petroleum (LP) gas is fuel for many
homes, businesses, private and municipal vehicle fleets, school
buses, taxis, forklifts and other indoor industrial vehicles
 Propane is stored as a liquid and converted into
a gas inside a tank or a cylinder. In its natural
form Propane (C3H8) is colorless and odorless
with flammability limits in air of 2.2 to 9.5%
 The “rotten egg” smell of Propane gas is an
odorant called “Mercaptan” added to aid in leak
detection
 Propane gas is heavier than air and may
accumulate in basements, crawl spaces, ditches
or along floors
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Heating Gases: Propane and Methane
Sources of Methane gas include Landfills; from the decomposition of
wastes, livestock and manure management, Natural Gas utilities or
Natural Gas powered vehicles and maintenance facilities
 Methane (CH4) is a colorless, odorless gas with
flammability limits in air of 5.3% to 15%
 Utility Natural Gas is almost pure Methane
mixed with ethane, propane, butane and
pentane
 The “rotten egg” smell of Methane gas is an
odorant called “Mercaptan” added to aid in leak
detection
 Natural Gas and Methane are lighter than air
and may accumulate high in a room or building
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HD-11 Hydrogen Gas Detector
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HD-11 and Hydrogen Gas
The HD-11 is a low voltage electronic detector of Hydrogen gas. The
HD-11 is designed for connection to Fire Alarm/Burglary Control
Panels. The HD-11 is intended for installation in buildings in nonhazardous locations where hydrogen gas may be present
 The three part plastic case allows the HD-11 to be
either surface mounted or installed over a fourinch square or double gang electrical box,
providing a near flush mount
 The HD-11 can be gas tested by directing gas
from an unlit butane cigarette lighter into the
detector near the left side through the vent holes
 Alarm set point: 10% LEL hydrogen gas
 Can be self-restoring or latching
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HD-11 and Hydrogen
Sources of Hydrogen include battery charging stations for golf
carts, forklifts or automobiles, battery back-up in IT rooms or
telecommunication towers and fuel cell or hydrogen powered
vehicles and maintenance facilities
 Lead-Acid batteries generate Hydrogen (H2)
gas during recharging
 At ordinary temperature and pressure
Hydrogen it is an odorless, colorless gas
 Hydrogen burns readily in air over a wide
range of concentrations: from 4 to 75% by
volume
 Hydrogen gas is lighter than air and may
accumulate high in a room or building
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Macurco Security Series Detector Accessories
Duct Mount Kit DMK-1
 Duct Mount Kit for monitoring gas
concentrations in ventilation ducts
Plug-in Power Supply PS-12
 120VAC to 12VDC transformer
CM-E1 Adaptor Kit
 2-Gang to Single-Gang Adaptor Plate
Kit; CM-15/15A to CM-E1 Conversion
or GD-2A to GD-2B Conversion
CME1-PCA Wire Harness
 Replacement 6-conductor pigtail
cable for use with the CM-E1 Carbon
Monoxide Detector
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Macurco Gas Detection Products
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