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GSM/PSTN Dual Network Alarm System

Yiwu Yidun E-commerce Firm

GSM/PSTN Dual Network Alarm System

GSM/PSTN Dual Network Alarm System

Function Instruction: 1. Dual-network (GSM&PSTN) alarm function, alarm information more safe; Intelligent recording PSTN first; 2.LED screen, by which users can see the defense zone easily and ...

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