GSM home alarm 12 wireless zones receiving frequency:433MHZ frequency: 900/1800MHz & 850/1900MHz (optional) 10 Hours GSM Alarm,wireless alarm,home alarm,GSM home alarm,wireless alarm,home alarm systemDescription and Main functionsThe alarm system is based on GSM network. With a GSM SIM card, it can be used wherever you want and the is no need to connect to a telephone line, this more is ...
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