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Fire Alarm Modules & Accessories

These are the supporting parts that extend and maintain a fire system once the panel is fitted. The range from ESP covers 24V power supplies, battery expansion boxes for backup, loop expanders and a network interface card for larger addressable installs, plus a programming tool for setting up devices. Expansion cards add zones to MagDuo two-wire panels, while smaller extras such as spare call point keys keep things in order.

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What these parts do

These are the supporting parts that extend and maintain a fire system once the panel is fitted. They are not the detection devices themselves but the components that keep a panel powered, add capacity as a building grows, and help with setting up and servicing the installed equipment.

Power and backup

Power supplies feed the panel and connected devices, and battery expansion boxes hold backup cells so the system keeps working if the mains drops. These sit alongside the panel and are sized to the load a system carries, making them a first consideration on larger installs where the panel alone cannot supply everything.

Expansion and capacity

As a system grows, expansion parts add to what the panel can handle. Loop expanders and a network interface card extend larger addressable installs, while expansion cards add zones to two-wire panels. A reflective long range kit pushes a beam detector's reach further across wide spaces, giving a 120m extension for the largest open areas.

Setup and upkeep

A programming tool sets up addressable devices on the system, making commissioning and changes easier. Smaller extras keep things in order over the life of an install, from spare call point keys to a lockable, wall-mountable document box for keeping records on site. These everyday parts often go overlooked at the planning stage, yet they are what keep a system running and serviceable once it is handed over and in daily use.

How to choose

Match the power supply and any battery backup to the size of your system first, then add loop expanders, a network card or zone expansion cards to suit how the install grows. Pick up a programming tool for addressable setup, and the spares and storage that keep the system serviceable. Free UK delivery over £99.

Frequently Asked Questions

What goes in a fire alarm power supply and battery box?
The power supply feeds the panel and connected devices, while the battery expansion box holds backup cells so the system keeps running if the mains supply drops.

What does a loop expander do?
It extends the capacity of a larger addressable panel, letting the system support more devices as a building grows. A network interface card serves the same purpose on bigger installs.

How do I add zones to a two-wire panel?
Expansion cards add zones to two-wire panels, so an existing system can cover more areas without replacing the panel itself.

What is the programming tool used for?
It sets up addressable devices on the system, which makes commissioning a new install and making later changes more straightforward.

What is the long range kit for?
The reflective long range kit extends a beam detector's reach across wide spaces, giving a 120m extension for the largest open areas.

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