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ShenZhen TopMax Electronics Co. LTD
Address：HaoYa Industrial Park,GuanLan Street, LongHua District, Shenzhen, GuangDong, China
Email：sales@topmaxelectronics.com
Phone：0086-755-33165093
Mobile：0086 18676369657
How PSTN alarm system make alert notice?
Added：
2014-02-10
Views：
Make sure the cables are correctly connected.
When accessory detects emergency, the panel and siren will hoot and users can receive alert calls.
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