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GSM SIM card door alarm, send SMS or call when the door open/close,Quad-band,(RF

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Shenzhen ReachFar Technology Co., Ltd.汇智科技有限公司

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GSM SIM card door alarm, send SMS or call when the door open/close,Quad-band,(RF

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GSM SIM card door alarm, send SMS or call when the door open/close,Quad-band,(RF

1) Simple operation,without install 2) The door was opened/closed, will send SMS and call you. 3) Active listening 4) Voice trigger call back 5) Remote battery check 7) Low battery remind 8) All ...

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