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- Smart home
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November 27-29, 2025
PWTC Expo, Guangzhou
第11屆2017第六屆中國國際老齡產(chǎn)業(yè)博覽會觀眾預登記通道，將于2017年5月開啟，
敬請期待。如有問題請與我們聯(lián)系，
電話： +86 (0)20 8989 9605/8989 9600，
郵箱：CRCinfo@polycn.com
Function: NB IoT communication; All China Unicom supports the telecommunications AEP platform; One click for help; Pull rope for help, waterproof design, can be installed in bathrooms and other places, APP push alarm, low battery alarm; Device heartbeat support server, mobile phone APP, WeChat official account, phone, SMS alarm push, two No. 7 batteries, ultra-low power consumption, long press on/off function.