Specifications

The Meridian photoelectric smoke detector sets a standard for
reliability and performance, with a chamber so revolutionary
it’s covered by two patents. There is no reflective surface as
found in other detectors so it is virtually immune to false
alarms generated by dust or dirt build-up. With this unique
chamber design it can detect slow, smoldering fires and flash
fires equally well. With 2-wire, 4-wire, addressable and wireless
versions, plus options for relay type, built-in sounder and fixed-
temperature sensor, Meridian is ready for your next security or
fire alarm installation.
SOURCE BOOK
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MN-140 SERIES
DC Powered Smoke Alarm
• Loud 85dB piezoelectric alarm
sounder
• Interconnect up to 20 detectors
• Removable terminals for easier wiring
• Optional fixed-temperature sensor,
135˚ F (57˚C) (T model)
• Optional form ‘C’ alarm relay (R model)
• Optional sounder (C model)
• Optional isolated fixed-temperature
sensor (H model)
• ULC Listed S531
MN-220 SERIES
Two-Wire Smoke Detectors
• Magnet-activated sensitivity test
switch
• Optional fixed-temperature sensor,
135˚F (57˚C) (T model)
• Optional form ‘C’ alarm relay
(R model)
• Nominal operating voltage range
- 12 - 24 VDC
• ULC Listed S529/UL Listed UL 268
MN-240 SERIES
Four-Wire Smoke Detectors
• Audible low-sensitivity indication
(sounder-equipped units only)
• Optional fixed-temperature sensor,
135˚ F (57˚C) (T model)
• Optional form ‘C’ alarm relay
(R model)
• Optional 85dB sounder (S model)
• Nominal operating voltage range
- 12 - 24 VDC
• UL Listed 268/ULC Listed S529
Acuity
™
Glassbreak Detectors
Acuity glassbreak detectors have built-in intelligence making
them ‘smart’ enough to discern the sound of breaking glass
from common sounds found in homes and businesses. With
their high-performance microphones and advanced
microprocessor-based Digital Sound Analysis (DSA), they can
hear all types of breaking framed glass - plate, laminated,
tempered and safety - up to 25’ away. And with wall and
ceiling-mount models, there’s an Acuity for any application.
FEATURES
Acuity Glassbreak Detectors
• Exceptional microphone frequency range
provides excellent sound capture at low
sound levels and distances of up
to 25’ (7.6 m)
• Jumper-selectable sensitivity range
• Digital signal processing analyzes sound
in remarkable detail to provide greater
detector sensitivity and immunity to false
alarms
• High static and transient protection
includes reliable MOV circuitry
• Exceptional detection of all common
types of framed glass including plate,
wired, tempered and laminated
• Detectors accommodate changes in
frame construction, glass thickness and
room acoustics
DETECTION RANGE
Detection Range
Glass Type Sizes Level 1
†
Level 2
†
Plate/Tempered
1⁄8 - 1⁄4" thick 18" x 18" and up 25' 15'
(3 - 6 mm) (46 x 46 cm) (7.6 m) (4.6 m)
12" x 12" to 18" x 18" 15' 10'
(30 x 30 to 46 x 46 cm) (4.6 m) (3 m)
Wired/Laminated
1⁄4" thick 18" x 18" and up 20'
(6 mm) (46 x 46 cm) (6 m)
12" x 12" to 18" x 18" 10'
(30 x 30 to 46 x 46 cm) (3 m)
†
Jumper selectable
27
MODELS
Wall-Mount
AC-100 Form ‘A‘ alarm contact
AC-101 Form ‘A‘ alarm contact & tamper switch
AC-102 Form ‘C‘ alarm contact & tamper switch
Ceiling-Mount
AC-500 Form ‘A‘ alarm contact
AC-501 Form ‘A‘ alarm contact & tamper switch
AC-502 Form ‘C’ alarm contact & tamper switch
AFT-100
Glassbreak Simulator
• Generates plate or
tempered glass
sound samples
• 3” (7.62 cm) full-range
speaker accurately
reproduces the full range
of frequencies generated
by shattering glass
• Single or continuous
sound operation
Meridian
®
Photoelectric Smoke Detectors
MODELS
MN140
MN140T
MN140R
MN140RT
MN140C
MN140CT
MN140CH
MODELS
MN220
MN220T
MN220R
MN220RT
MODELS
MN240
MN240T
MN240R
MN240RT
MN240S
MN240ST
MN240SR
MN240SRT
INTRUSION PRODUCTS
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