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[求助] 设备在线状态 硬件端何时发送,多久发一次呢? #3113

@Farewell-CK

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@Farewell-CK

1、使用了mqtt, 来接收设备发送的消息
2、但是设备要多久发一次呢?这个是否有考量呢
感谢大家,感谢作者

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