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Author Topic: Grade F Alarms Interlinked?  (Read 5030 times)

Offline Tadees

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Grade F Alarms Interlinked?
« on: June 30, 2016, 11:40:41 AM »
How can battery powered smoke alarms in a dwelling be interlinked? 

BS 5839 @ page 10 states: "In the case of Grade D, Grade E and Grade F systems, where more than one smoke alarm is installed the smoke alarms normally need to be interlinked (see 13.2). Any heat alarms also need to be interlinked with the smoke alarms."
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Offline colin todd

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Re: Grade F Alarms Interlinked?
« Reply #1 on: June 30, 2016, 12:40:04 PM »
Radio
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Offline David Rooney

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Re: Grade F Alarms Interlinked?
« Reply #2 on: June 30, 2016, 04:12:47 PM »
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Offline AnthonyB

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Re: Grade F Alarms Interlinked?
« Reply #3 on: June 30, 2016, 08:20:39 PM »
And in the old days they were connected by lightweight twin core 'bell' wire - in fact you can still get these models although for obvious reasons radio link is now more popular.
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