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Infinity ID2 2 Wire Fire Alarm System

  • Ability to wire in Radial or Loop modes (selectable on panel).
  • No need for end-of-line devices and ability to spur from any device.
  • Panel shows exact devices in fire/fault (e.g. “Main Office”, “Bedroom 1”, etc).

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Zeta Alarms(17)
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The Infinity ID2 is widely recognised as the leading 2-wire fire alarm system. It is the only system of this type to offer truly intelligent features such as identifying the exact device in fire or fault, removing the need for pesky end-of-line devices and flexible wiring (choice of wiring formats including the ability to spur). If you still need convincing, check out our Infinity ID2 vs other 2-wire fire systems breakdown.

What is the Infinity ID2

Zeta Alarm Systems is proud to introduce the most advanced 2 wire system on the market. We can now provide a system that gives all of the benefits associated with a ‘2 Wire’ installation (less cable, quicker installation, cost savings on labour/product) and has the facility to ‘I.D.’ the devices. The system is built on the proven communication protocol developed by Zeta Alarm Systems and shares the same platform as our largest, most powerful system. The Infinity ID2 can be used for new installations, as a retro-fit for any conventional system or as a replacement for existing 2 wire systems when the extra features are deemed to be desirable/necessary. This is possible because the Infinity ID2 devices sit on radial circuits, thus making it easy to ‘upgrade’ a system with the facility to I.D. devices without the need to re- wire.


The Infinity ID2 fire alarm system has been designed to meet the full requirements of BSEN5839 part 1 and BSEN5839 part 6.The control panel has been designed to meet EN54 part 2 and EN54 part 4.


A single pair of wires is used from each zone terminal (radial circuit) which connects all detectors, call points, warning devices (sounders/ flashers) and interfaces. There is no requirement for an ‘End of line’ device. This will save a significant amount on the cost of traditional conventional or addressable systems (around 40% or more in the majority of cases).

Cable Break Protection

In the event of a cable break, the panel will report the break. The devices after the break will be lost, but will be listed one-by-one on the panel display to help locate the break.

Special Detector Bases

Our bases all come with both sounder and LED flasher as standard. This makes our system the only system available today with a sounder and flasher with every detector, improving the audibility and visual identification of an alarm.

Alarm, Fault & System History

The Infinity ID2 includes a 2048 event history that stores all alarm, fault and system events.

System Monitoring

Since every device is monitored constantly and communicates with the panel at a maximum interval of 4 seconds, any malfunction in any device will be reported by the panel. This of course will include the exact location of the device.

Cable Short Circuit Protection

Each zone is equipped with a short circuit isolator built-in to the panel, so any short circuit, no matter how severe, will not affect the electronics in the control panel.

Alarm Indication

Each device can be uniquely identified (I.D.) by the panel and a 20 character label set for each. In the event of a fire or fault the exact device that triggered the event will be shown.

Installation & Commissioning

In addition to the benefits already listed, once the panel has been connected a ‘Device Count Verification’ feature will confirm the number and type of every device. This can then be checked against the system specification.

Alarm Verification

Each smoke detector can be simply programmed to verify an alarm before a full evacuation. This gives the benefit of being able to operate an individual detector’s sounder/ flasher base and have a time period to clear the smoke/verify the alarm. This makes the Infinity ID2 perfect for HMO installations.

Zone Check – Cable Integrity & Zone Identification Facility

Our Zone Check facility allows you to illuminate the LEDs and flash the LED flashers of all devices contained within a zone. This has many benefits including identifying the location of a zone if you are visiting an installation for the first time and also checking the cable runs to all devices that should be contained in a zone. (It is also possible to narrow this down to an individual device if required).