The Honeywell Morley-IAS HM-MCP-GLASS-AP addressable break glass manual call point is engineered specifically to interface directly with Morley-IAS addressable fire alarm control panels. Operating across the proprietary Morley-IAS analogue addressable communications protocol, the device enables seamless data exchange, loop polling, and precise point identification within complete Morley-IAS life safety networks.
Loop Signaling and Address Configuration
Loop addressing is executed via a rotary decade switch positioned at the rear of the device housing. This mechanical decade switch architecture allows field technicians to establish device addresses clearly prior to clipping the call point into place, eliminating complex electronic commissioning steps. The device maintains full backward compatibility with existing Morley-IAS addressable manual call point loops, making it an exact drop-in replacement or expansion unit for legacy installations.
Panel-to-device communication includes automated supervisory polling indicated by the onboard LED. Under standard standby conditions, the fire alarm control panel commands the LED to blink red during communication sweeps. When activated into a fire alarm state, the LED turns to continuous red illumination, signaling immediate localized alarm status back to the control equipment.
Loop Voltage and Electrical Load Parameters
System designers and electrical engineers must calculate loop capacity and power distribution in accordance with the device’s operational parameters:
- Operating Voltage Range: 15V to 32Vdc maximum, accommodating standard loop driver configurations and panel fluctuations.
- Quiescent Current Consumption: 80 µA at 24Vdc under standby conditions without loop communication active.
- Alarm Current Consumption: 130 µA at 24Vdc with active loop communications engaged.
- Internal Switching: Precision internal microswitch actuated via glass displacement or manual test key action.
Mounting Hardware and Enclosure Integration
The call point features a plug-and-play installation concept supporting both semi-flush and surface mounting configurations within dry commercial and industrial spaces. The unit holds an ingress protection rating of IP24D and operates reliably across temperature ranges from -10°C to 55°C with 10% to 93% relative humidity (non-condensing).
- Semi-Flush Mounting: Integrates directly into standard single-gang flush back boxes, providing installed dimensions of 89 mm (W) x 93 mm (H) x 27.5 mm (D) with a total weight of 130 g.
- Surface Mounting: Mounts directly to the dedicated Morley-IAS MUS041W surface back box, resulting in external dimensions of 89 mm (W) x 93 mm (H) x 59.5 mm (D) and an assembled weight of 180 g.
Compatible System Accessories and Replacement Parts
Field servicing, routine testing, and element replacement are supported by dedicated Morley-IAS system accessories that maintain conformity with EN54 Part 11 standards:
| Part Number | Description | Functional Role & System Compatibility |
|---|---|---|
| MUS041W | Manual Call Point Back Box | Dedicated surface-mount enclosure box matching the Red RAL 3001 PC/ABS body. |
| MUS155 | Pack of 5 Glass Elements | Direct replacement frangible glass operating elements for standard break-glass operation. |
| PS230 | Pack of 10 Resettable Elements | Flexible resettable operating elements allowing non-destructive reset after activation. |
| SC070 | Pack of 10 Test Keys | Specialist test keys inserted into the bottom slot to lower the glass and release the microswitch for functional testing without breaking glass. |
