How Does the ARM Staff Alarm System Work? 


In passive mode the BeltClip units transmit an Infra-Red data burst approx. every 5 seconds. Receiving Wall/Ceiling location units will then re-broadcast the “BeltClip ID” and “Location” to the system, to update the Tracking Log, which is constantly updated as the member of staff moves around the building.



When a BeltClip is activated, it simultaneously transmits both Infra-Red and Radio Alarm Signals. (DuoComm version only)

The Infra-Red alarm signal is received by the local location unit, which in turn transmits a Radio Alarm Signal to the system.  Whilst the Radio Alarm Signal from the BeltClip unit is also transmitted directly to the system.

The system then displays the BeltClip ID, Alarm Type & Location. This information can be relayed to other display units around the building or directly to staff pagers/DECT handsets. If the incident moves into other areas covered by location units, the new location will be updated.



Utilising 2 technologies (Infra-Red & Radio) to raise an alarm provides staff with a level of redundancy. If a BeltClip unit is activated in an area not covered by a location unit or the Infra-Red signal was masked, then the alarm would not be raised. Using our DuoComm Technology, even if the Infra-Red signals are not received by a location unit, the BeltClip's Radio signal is still transmitted directly to the system.

The system cross references the tracking log and raises the alarm with the Last Known Location of the BeltClip. This is depicted by the letters "LKL" after the alarm location, so staff are aware it was the last place the BeltClip was seen. If the Infra-Red alarm signals from the BeltClip are unmasked or move within the vaccinity of a location unit, the system will update the location of the alarm.

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