Description
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Description:
1)Alarm mode: Give an alarm warning while Alarm density reaches: Coal gas: 1000~5000ppm, LGP: 1000~5000ppm, natural gas: 1000ppm~5000ppm
2)Working mode: independent & compatible mode: work solely at party ,room etc.
work with our burglar alarm panel, so the alarm panel automatically dial up the alarm
phone.
3) siren:>90db 4) strict method with good quality
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