Description
Morley Addressable Sounder
Overview
The Morley Addressable Sounder is a high-performance loop-powered audible and visual warning device engineered to provide clear, reliable emergency notification in commercial, industrial, and institutional applications. Manufactured by Morley-IAS — a trusted brand under Honeywell with decades of fire safety expertise — this addressable sounder delivers powerful audible alerts with a choice of 32 tones and multiple volume levels, ensuring effective occupant warning in any environment.
Available in multiple configurations including Base Sounders, Wall Mounted Sounders, and Combined Sounder/Strobe units, the Morley Addressable Sounder range offers unmatched flexibility to suit any application requirement. Featuring a common B501AP base shared with Morley detectors, these devices streamline installation, reduce inventory complexity, and integrate seamlessly into Morley-IAS analogue addressable fire alarm systems.
Whether you’re equipping a commercial building, an industrial facility, a hospital, a hotel, or a residential complex, Morley Addressable Sounders deliver the intelligence, reliability, and performance you need for comprehensive fire protection and life safety.
Key Features
| Feature | Description |
|---|---|
| Loop-Powered Operation | Powered directly from the analogue addressable loop, eliminating the need for separate power supplies |
| 32 Tone Selection | Wide range of tones to cover multiple markets, selectable on-device or from the control panel |
| Adjustable Volume Control | Three volume levels adjustable on-device or from the panel to suit specific application requirements |
| Automatic Synchronisation | Sounder (and strobe on combined units) synchronises automatically for coordinated warning |
| Low Current Draw | Energy-efficient design enables more devices per loop |
| Rotary Wheel Addressing | Simple, familiar rotary wheel address controls for easy system configuration |
| Address Tag for Clear Indication | Clear address identification simplifies installation and maintenance |
| Anti-Tamper Feature | Prevents unauthorised access and ensures system integrity |
| In-Built Isolation Options | Available with integral short circuit isolation (models with ‘-I’ suffix) for enhanced loop reliability |
| Common Base with Detectors | Utilises the B501AP base, common with Morley detectors, for installation flexibility and reduced inventory |
| Large Cable Access | Rear and surface cable entry options for easy wiring |
| Loop Continuity Spring | Ensures reliable loop continuity even during maintenance |
| Positive “Poke Yoke” Engagement | Ensures correct installation alignment |
| Choice of Colours | Available in Pure White, Ivory, or Red body colours |
| EN54-3 Approved | Meets European standards for sounder devices |
Available Models
| Model | Description |
|---|---|
| MI-BSO-PP-N | Addressable base sounder without isolator; Pure White or Ivory body colours; common B501AP base |
| MI-BSO-PP-I / BSO-PP-I05 | Addressable base sounder with built-in loop isolation; Pure White body; common B501AP base |
| MI-WSO-PP-N | Wall mounted addressable sounder; White body; for use on Morley protocol analogue addressable systems |
| MI-WSO-PR-N / WSO-PR-N05 | Wall mounted addressable sounder; Red body; 32 tone selection; anti-tamper feature |
| MI-WSO-PR-I | Wall mounted addressable sounder with loop isolation; Red body |
| MI-WSS-PR-N / WSS-PR-N05 | Wall mounted combined sounder and strobe/beacon; Red body with red flash; EN54-3 approved |
| MI-WSS-PR-I / WSS-PR-I05 | Wall mounted combined sounder and strobe with loop isolation; Red body with red flash |
| MI-WST-XX-I | Wall mounted sounder with integral isolation; 32 tone sets; three volume levels |
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Morley-IAS (Honeywell) |
| System Type | Analogue Addressable |
| Protocol | Morley-IAS Protocol |
| Power Supply | Loop Powered |
| Tone Selection | 32 tones (on-device or from panel) |
| Volume Levels | 3 levels (adjustable on-device or from panel) |
| Addressing | Rotary wheel address controls |
| Maximum Addresses | Up to 159 addresses available |
| Cable Entry | Rear or surface cable entry |
| Mounting | Common B501AP base (compatible with detectors) |
| Body Colours | Pure White, Ivory, Red |
| Certifications | EN54-3 Approved |
Why Choose Morley Addressable Sounder?
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Trusted Global Brand — Manufactured by Morley-IAS, a Honeywell company with decades of fire safety expertise and global leadership
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EN54-3 Approved — Meets stringent European standards for sounder devices, ensuring quality and reliability
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Unmatched Flexibility — Available in base sounder, wall mounted, and combined sounder/strobe configurations to suit any application
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32 Tones & 3 Volume Levels — Extensive tone selection and adjustable volume ensure effective warning in any environment
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Installation Efficiency — Common B501AP base with detectors simplifies installation, reduces inventory, and lowers costs
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Enhanced System Reliability — Optional integral loop isolation (models with ‘-I’ suffix) prevents a single wiring fault from disabling the loop
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Easy Configuration — Simple rotary wheel address controls and on-device tone/volume adjustment simplify system setup
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Low Power Consumption — Low current draw enables more devices per loop, maximising system capacity
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Tamper-Proof Design — Anti-tamper feature ensures system integrity and prevents unauthorised access
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Automatic Synchronisation — Coordinated audible (and visual) warning for clear, non-confusing alerts
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Made in India — Proudly manufactured with quality craftsmanship
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Wide Compatibility — Compatible with all Morley-IAS analogue addressable fire alarm control panels
Ideal Applications
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Commercial Buildings — Office complexes, shopping malls, retail spaces, and hotels
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Industrial Facilities — Factories, warehouses, manufacturing plants, and data centres
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Healthcare Facilities — Hospitals, clinics, and nursing homes
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Educational Institutions — Schools, colleges, and universities
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Residential Complexes — Apartments, housing societies, and gated communities
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Public Buildings — Auditoriums, theatres, airports, and community centres
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Transportation Hubs — Railway stations, bus terminals, and airports
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Hospitality Sector — Hotels, resorts, and restaurants
Compliance & Standards
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EN54-3 — Certified for fire alarm sounder devices
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Morley-IAS Protocol — Compatible with Morley-IAS analogue addressable fire alarm control panels
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Common Base (B501AP) — Utilises the standard B501AP base, common with Morley detectors
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In-Built Isolation — Available with integral short circuit isolation (models with ‘-I’ suffix)
For detailed product inquiries, technical support, or to place an order, please contact our sales team.







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