We want to store the data when the WIFI is offline . and then send the data later . 

We can send the data with out any issues. 

We want to include the time stamp . How can we do this 

var meter_data = {

    "SN": "CFF11567",

    "Datas": [

        [

            222,

            10,

            2000,

            1234,

            44,

            50,

            0.9

        ],

        [

            226,

            10,

            2000,

            1234,

            44,

            50,

            0.9

        ],

        [

            226,

            10,

            2000,

            1234,

            44,

            50,

            0.9

        ],

        [

            3000,

            22222,

            5555

        ]

    ] ,  "localTime": "2024-01-01 15:27:33"

}

Thanks for your suggestion.

We will consider introducing the timestamp in the future.