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Home > FAQ
¡ö F A Q
What happen if can not hear alarm-voice ?
How to cancel/acknowledge the Alarm using Tel ?
What happen if alarm panel can not communicate with alarm center ?
What happen outdoor can not work when external events occurred ?
How GSM dialer does work for ?
What happen if alarm panel can not work ?
What is the tamper switch used for?
What happens if thick layer of dust covers beam surface?
Why do beam detectors give false alarms around dawn and/or dusk?
Do photoelectric detectors work well in heavy rain?
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