Addressable Shop Unit Monitor – MSU840

An extensive range of interfaces are available to support the Eaton range of control panels, providing solutions for most design requirements.

The shop monitor unit (MSU840) is designed to enable small units with conventional fire detection to be fully integrated with a main intelligent addressable fire system.

This unit is ideal for applications such as connecting individual shop units into a main shopping centre system.

An external power supply is required to drive the 2 conventional sounder circuits. This power supply must be regulated for fire and current limited.

Additional information
Order Code




Product Type

Addressable Interfaces

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No hard addressing required


Monitored for open, short circuits and earth contact faults


Includes output changeover contacts

Providing the flexibility that shopping centres demand

Over the course of many years shopping centres and their individual retail units evolve as businesses come and go.

For fire alarm systems this can represent a significant challenge as the use of space changes, the system must also change to match new demands.

Interfaces allow for a variety of installations to be simplified without the use of specialist or customised equipment, making it simple to expand fire alarm systems with existing wiring.

The shop monitor unit empowers building owners to maximise the functionality and flexibility of retail units with the ability to connect individual units to a larger central system. The intelligent device can connect an unlimited number of call points as well as up to 20 detectors. Call points can also be connected with detectors on the detector zone if preferred.

Simple integration of conventional devices onto a addressable fire system

Providing 2 conventional sounder circuits, the unit accepts a zone of Eaton conventional detectors and a zone of conventional call points. The 2 sounder circuits enable small conventional fire detection units to be integrated with a main addressable fire system.

Flexibility not limited to the shop

The shop monitor can be used for more than just shopping centres. The unit is ideal for large buildings or installations with subunits.

Designed to ease the process of expanding your addressable system, the monitor provides flexibility to be used in airports, office blocks and even sports stadiums.


• Quick and simple to install
• No hard addressing required (Plug and play)
• Easy to expand a system using existing wiring
• Reduced installation cost by using the 2
sounder circuits


• Soft addressed
• Integral short circuit isolator
• Single address
• Provides 2 conventional sounder circuits
• Accepts a zone of Cooper conventional detectors and a zone of conventional callpoints
• Inputs monitored for open, short circuits and earth contact faults


TEL: 254-774-211313

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