[
    {
        "cmd": "GET_BACK_SW_VERSION",
        "val": 0,
        "lable": "后板软件版本",
        "timeout": 2000
    },
    {
        "cmd": "GET_BACK_HW_VERSION",
        "val": 0,
        "lable": "后板硬件版本",
        "timeout": 2000
    },
    {
        "cmd": "GET_BACK_SN",
        "val": 0,
        "lable": "后板SN号",
        "timeout": 2000
    },
    {
        "cmd": "GET_BACK_UID",
        "val": 0,
        "lable": "后板UID",
        "timeout": 2000
    }
]