Notifier Mini-Horn User Manual
SpectrAlert® Advance
Mini-Horns Series
• MHR1A • MHRA • MHRZA
• MHW1A • MHWA • MHWZA
General
The SpectrAlert® Advance series of mini-horn sounders are
designed to simplify installation to provide primary and secondary signaling for fire and security applications.
The MHR and MHW mini-horns are ideal for residential, hotel
or motel fire system applications, where a smaller notification
device is desired. The mini-horns come in versions that offer
high and low volume settings, temporal or non-temporal tones,
synchronization and silencing to meet the intent of the
National Building Code Section 3.2.4.18.9. The mini-horns can
be mounted to single-gang backboxes for aesthetically sensitive applications. Synchronization is provided on certain models when using the MDLA module. Mini-horns with silencing
have an accelerated silence test feature which allows testing
of the silence operation without waiting for the entire time-out
period.
The MHR and MHW mini-horns can operate between 0°C to
49°C (32°F to 120°F) from a regulated DC or full-wave rectified, unfiltered power supply.
Features
• 12 and 24V operation.
• High and low volume settings.
• Temporal and non-temporal tones.
• Mounts to a single-gang backbox.
• Low current draw.
• Accelerated silence test feature on silenceable models.
• Mechanically and electrically compatible with PA400 series
Mini-Alert™ sounders.
Specifications
PHYSICAL SPECIALIZATIONS
Dimensions: 4.6”L x 2.9”W x .45”D.
Weight: 2.67 oz.
Operating Temperature Range: 0°C to 49°C (32°F to 120°F).
Mounting: Single-gang
ELECTRICAL SPECIFICATIONS
Input Terminals: 12 to 18 AWG
Nominal Voltage: Regulated 12DC/FWR or 24DC/FWR
Operating Voltage: 8-33
Operating Voltage with MDLA: 9-33
Sounder Frequency: 3 KHZ (nominal)
Silence Time (MHRZA/MHWZA): 10 minutes maximum
Silence Reset Power down Time (MHRZA/MHWZA): 4 seconds TYP
Architectural/Engineering
Specifications
MHRZA/MHWZA
Mini-horns shall be a System Sensor Model MHRZA or
MHWZA capable of operating at nominal 12 or 24 VDC and
Canadian DN-60296:A
Audio/Visual Devices
60296pho1.jpg
shall mount to a single-gang backbox. Mini-horn shall be listed
to Underwriter’s Laboratories of Canada CAN/ULC S525. Minihorns shall operate between 0 and 49 degrees Celsius (32
and 120 degrees Fahrenheit) from a regulated DC, or full-wave
rectified, unfiltered power supply. When used with the
Sync•Circuit™ Module Model MDLA, 12-volt rated notification
appliance circuit outputs shall operate between 9 and 17.5
volts; 24-volt rated notification appliance circuit outputs shall
operate between 16 and 33 volts. Mini-horns shall have settings for Hi/Low volume and temporal/continuous tones. A
silence feature shall be included to allow silencing of the minihorn to meet the intent of the National Building Code Section
3.2.4.18.9. Mini-horns shall have the ability of an accelerated
silence test feature and shall be able to operate from either
continuous or coded NAC circuits.
MHRA/MHWA
Mini-horns shall be a System Sensor Model MHRA or MHWA
capable of operating at nominal 12 or 24VDC and shall mount
to a single-gang backbox. Mini-horn shall be listed to Underwriter’s Laboratories of Canada CAN/ULC S525. Mini-horns
shall operate between 0 and 40 degrees Celsius (32 and 120
degrees Fahrenheit) from a regulated DC, or full-wave rectified, unfiltered power supply. When used with a Sync•Circuit
Module Model MDLA, 12-volt rated notification appliance circuit outputs shall operate between 9 and 17.5 volts; 24-volt
rated notification appliance circuit outputs shall operate
between 16 and 33 volts. Mini-horns shall have settings for Hi/
Low volume and temporal/continuous tones. Mini-horns shall
be able to operate from either continuous or coded NAC circuits.
MHR1A/MHW1A
Mini-horns shall be a System Sensor Model MHR1A or
MHW1A capable of operating at nominal 12 or 24VDC and
shall be mounted to a single-gang backbox. Mini-horn shall be
listed to Underwriter’s Laboratories of Canada CAN/ULC
S525. Mini-horns shall operate between 0 and 49 degrees
Celsius (32 and 120 degrees Fahrenheit) from a regulated DC,
or full-wave rectified, unfiltered power supply. Mini-horns shall
be able to operate from either continuous or coded NAC circuits.
DN-60296:A • 9/20/07 — Page 1 of 4
Sound Output (dBA) in Anechoic Room
Current Draw (mA RMS)
MHR1A/MHW1A
Tone
Temporal
(from FACP)
Continuous
MHRA/MHWA
Switch
Position
Sound
Pattern
1TemporalHigh
2 Temporal Low
Non
3
Temporal
Non
4
Temporal
MHRZA/MHWZA
Switch
Position
1 Temporal High
2 Temporal Low
3
4
Sound
Pattern
Non
Temporal
Non
Temporal
Power
Supply
DC 88 90 92 93 94
FWR 8893949495
DC 88 90 91 92 93
FWR 8890919191
Volume
High
Low
8V 12V 16V 24V 33V
Power
Supply
DC 87 91 94 95 95
FWR 90 93 94 95 95
DC 86 89 91 93 93
FWR 88 92 93 92 90
DC 86 88 90 92 93
FWR 86 89 90 92 94
DC 85 88 89 91 92
FWR 85 88 89 90 91
Volume
High
Low
Voltage
Voltage
8V 12V 16V 24V 33V
Power
Supply
DC 89 90 91
FWR 92 91 91
DC 87 89 89
FWR 90 89 89
DC 89 90 90
FWR 87 89 90
DC 86 87 86
FWR 86 86 89
Voltage
16V 24V 33V
MHR1A/MHW1A
Tone
Temporal
(from FACP)
Continuous
Power
Supply
DC 4 6 9 12 12
FWR4691112
DC 6 8 12 15 16
FWR 5 9 121517
MHRA/MHWA
Switch
Position
Sound
Non
Non
Volume
High
Low
Pattern
1 Temporal High
2 Temporal Low
3
Temporal
4
Temporal
MHRZA/MHWZA
Switch
Position
1TemporalHigh
2 Temporal Low
3
4
Sound
Pattern
Non
Temporal
Non
Temporal
Voltage
8V 12V 16V 24V 33V
Power
Supply
Volume
High
Low
8V 12V 16V 24V 33V
DC 6 9 13 16 18
FWR 6 8 10 14 16
DC 58111315
FWR 5691214
DC 711151921
FWR 6 9 12 16 19
DC 6 9 12 15 17
FWR 58111416
Power
Supply
Voltage
Voltage
16V 24V 33V
DC 18 17 13
FWR 18 15 12
DC 16 13 11
FWR 16 13 10
DC 21 19 14
FWR 20 17 14
DC 17 15 11
FWR 17 14 11
Page 2 of 4 — Canadian DN-60296:A • 9/20/07
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