Notifier Mini-Horns MHW User Manual

Spectralert® advance mini-horns, Mhr/mhw, General

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dn-60341:a1 • 2/9/10 — Page 1 of 2

SpectrAlert® Advance
Mini-Horns

MHR/MHW

Audio/Visual Devices

dn-60341:a1

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 operate at 12 and 24 volts and

are ideal for hotel, motel or residential fire system applications,

where a smaller notification device is desired. The mini-horns

offer high and low volume settings, and temporal or non-tem-

poral tones. The horns can be mounted to single gang back

boxes for aesthetically sensitive applications. Synchronization

is also provided when using the MDL3R, MDL3W module or

any Notifier panel with the System Sensor sync protocol.
The MHR and MHW mini-horns can operate between 32 and

120 degrees Fahrenheit from a regulated DC or full-wave recti-

fied, unfiltered power supply. They are listed to Underwriter’s

Laboratories.

Features

• Standard UL 464 for fire protective signaling systems.
• 12 and 24V operation.
• High and low volume settings.
• Temporal and non-temporal tones.
• Mounts to a single-gang backbox.
• Compatible with MDL sync module.
• 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: Surface: Deep single-gang backbox (2-3/4” deep);

Flush: Standard 4” x 4” back box.

ELECTRICAL SPECIFICATIONS

Input Terminals: 12 to 18 AWG
Nominal Voltage: Regulated 12DC/FWR or 24DC/FWR
Operating Voltage: 8-33
Operating Voltage with MDL3R/W: 9-33

Architectural/Engineering
Specifications

Mini-horns shall be a System Sensor Model MHR or MHW

capable of operating at nominal 12 or 24VDC and shall mount

to a single gang back box. Mini-horns shall be listed to Under-

writer’s Laboratories Standard UL464 for fire protective signal-

ing systems. Mini-horns shall operate between 32 and 120

degrees Fahrenheit from a regulated DC, or full-wave rectified,

unfiltered power supply. When used with the Sync•Circuit™

Module, 12-volt rated notification appliance circuit outputs

shall operate between nine and 17.5 volts; 24-volt rated notifi-

cation appliance circuit outputs shall operate between 17 and

33 volts.

Listings and Approvals

These listings and approvals apply to the modules specified in

this document. In some cases, certain modules or applications

may not be listed by certain approval agencies, or listing may

be in progress. Consult factory for listing status.

UL Listed: S4011

MEA: 7-07-E

CSFM: 7135-1653:196

FM Approved: 3028007

Ordering Information

MHR: Mini-Horn; Red.
MHW: Mini-Horn; White.

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