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Radio group: at least two,
maximum 15 RISAs
• All networked units of the same
radio group will issue an alarm
when at least one RISA of this group
detects smoke or temperatures
temporarily assigned the “master”
function (of establishing and mana-
ging the radio group)
(e.g. landing or corridor)
Common radio group: is also a normal
radio group
• where one or more radio groups
radio group (e.g. stairway), this
becomes a common radio group.
• All interlinked alarms of a radio
• All alarms of the common radio
a delay period of roughly 60 seconds,
issue alarms if they are linked as
a common radio group to the radio
• Alarms are transferred only from the
mon radio group (e.g. stairway)
• There is no transfer in the other di-
rection, from the common radio
group (e.g. stairway) to the radio
• Up to 14 radio groups can be inter-
linked to a common radio group
• A radio group cannot be linked
to a common radio group and
also with other radio groups
Setting Up the “Master”:
Remove the black activation pin
(which also acts as activation protec-
tion); but this will still be needed.
Press red activation button
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