文档地址 https://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1421140547 [图片] 设备码文档   https://iot.weixin.qq.com/wiki/new/index.html?page=3-4-4 当用户之前关注了公众号，并且48小时内无互动时，扫描设备二维码，服务器收到回调后，调客服接口发送消息提示 [代码]{[代码][代码]"errcode"[代码][代码]:45015,[代码][代码]"errmsg"[代码][代码]:[代码][代码]"response out of time limit or subscription is canceled hint: [k7VBJa04943951]"[代码][代码]}[代码]