The Honeywell Morley-IAS MI-WSS-PR-N wall-mounted sounder strobe (ERP Ref: KTI07001001MIPR) is an intelligent, loop-powered notification appliance engineered specifically for seamless integration into Morley-IAS addressable fire detection networks. Operating under the native Morley-IAS communication protocol, the MI-WSS-PR-N interfaces directly with compatible Morley-IAS intelligent fire alarm control panels without requiring auxiliary power supplies or separate relay trigger modules.
Morley-IAS Control Panel Protocol Integration
The MI-WSS-PR-N is fully compatible with Morley-IAS addressable fire alarm control panels communicating via the proprietary Morley-IAS protocol. Because it shares communication protocols and electrical characteristics with the broader Morley-IAS intelligent device family, system designers can deploy this audiovisual notification device across standard addressable signaling loops alongside intelligent sensors and call points.
B501AP Base and Physical Mounting Compatibility
To streamline installation across commercial and industrial facilities, the MI-WSS-PR-N utilizes the standard Honeywell Morley-IAS B501AP mounting base. This shared base footprint maintains complete mechanical and electrical compatibility with the Morley-IAS detector range, allowing installers to use a uniform rough-in architecture across the entire jobsite.
- Mounting Base: Exclusively mounts directly to the Honeywell Morley-IAS B501AP base.
- Pre-Commissioning Testing: The B501AP base includes an integrated shorting spring, which allows installation contractors to test circuit wiring continuity across the entire addressable loop before twisting and locking active sounder strobe heads into place.
- Cabling Accommodation: Designed with large cable access provisions to support both rear-entry and surface-mount cable routing configurations.
- Terminal Capacity: Integrated screw terminals accept solid or stranded field conductors sized between 1.5 mm² and 2.5 mm² max.
Loop Electrical Compatibility and Loading Constraints
Calculating fire alarm loop voltage drops and standby battery loads requires careful verification of device current profiles. The MI-WSS-PR-N draws operational power directly from the signaling line circuit (SLC) within an operating supply voltage range of 15 to 29 VDC, accommodating both non-isolation and isolation operating modes.
| Electrical Parameter | Specification Value |
|---|---|
| Operating Supply Voltage | 15 to 29 VDC (Non-isolation and Isolation modes) |
| Standby Current (Non-Isolation) | 120 µA |
| Standby Current (Isolation) | 225 µA |
| Max Current Consumption (Sounder + Strobe) | 14.5 mA (High Volume, Tone 11 at 15V) |
| Maximum Acoustic Output | 97 dB(A) +/-3 dB at 1 m (High Volume, Tone 8 at 24V) |
Addressing and Synchronization Compatibility
Device identification on the Morley-IAS loop is accomplished via two onboard rotary decimal switches, providing physical decimal addressing that allows commissioning technicians to select and verify addresses directly without specialized electronic handheld programmers. When connected across the addressable network, the MI-WSS-PR-N supports automatic protocol-driven synchronisation of both the audible sounder tone and the 1 Hz visual strobe flash rate with adjacent sounder strobe devices on the loop, eliminating chaotic acoustic interference in open corridors and wide-span areas.
Standards and Application Scope Compatibility
The MI-WSS-PR-N incorporates a red plastic body and a red lens, constructed for dependable signaling across corporate offices, industrial manufacturing facilities, warehouses, hospitals, and commercial properties. Its audible horn feature provides 32 selectable tones and 3 volume settings (High, Medium, Low) certified under EN54-3. For system design compliance, fire protection engineers must note that the integrated 1 Hz flashing strobe is classified as a Visual Indicating Device (VID). The device is not EN54-23 approved (Visual Alarm Device) and cannot be specified as a primary visual-only evacuation alarm in areas where EN54-23 compliance is legally mandatory.
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