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This SDK only works with devices released within the past 3 years. We regularly optimize and update the SDK to ensure compatibility and performance. We do not guarantee compatibility or provide technical support for devices older than 3 years.

# UNLOCK_PARAM

### Structure Definition

C++C#

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    struct UNLOCK_PARAM {
        int lockID;
        char resv[64];
    };

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    [StructLayout(LayoutKind.Sequential, Pack = 4)]
    public struct UNLOCK_PARAM
    {
        public Int32 lockID;
        [MarshalAs(UnmanagedType.ByValArray, ArraySubType = UnmanagedType.U1, SizeConst = 64)]
        public byte[] resv;
    }

### Function Description

Access control door opening parameters

### Member Description

Member | Type | Remark
--- | --- | ---
lockID | int | Door lock number, starting from 1. If there is no corresponding door lock, open all door locks.
resv | char[64] | Reserved field.

Error Code