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HOME » QUESTION » when i press self-test of the interlinked detector, it normally will beep 2 times, but i see the device alarm 4 times,what’s the reason?

Q：when i press self-test of the interlinked detector, it normally will beep 2 times, but i see the device alarm 4 times,what’s the reason?

A：

It’s related with the signal forwarding,if there is interlink siren in the group,it will forward again when receive the test signal.