Notifier Mini-Horn Series User Manual

Spectralert® advance mini-horns series, General, Features

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DN-60296:A • 9/20/07 — Page 1 of 4

SpectrAlert® Advance
Mini-Horns Series

• MHR1A

• MHRA

• MHRZA

• MHW1A

• MHWA

• MHWZA

Audio/Visual Devices

Canadian DN-60296:A

General

The SpectrAlert® Advance series of mini-horn sounders are

designed to simplify installation to provide primary and sec-

ondary 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 sensi-

tive applications. Synchronization is provided on certain mod-

els 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 recti-

fied, 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 sec-

onds 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

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 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 set-

tings for Hi/Low volume and temporal/continuous tones. A

silence feature shall be included to allow silencing of the mini-

horn 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 Under-

writer’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 recti-

fied, unfiltered power supply. When used with a Sync•Circuit

Module Model MDLA, 12-volt rated notification appliance cir-

cuit 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 cir-

cuits.

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 cir-

cuits.

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