Queries the basic information about a specified device. The information includes the device ID, device certificate, and alias.

Limits

Each Alibaba Cloud account can run a maximum of 500 queries per second (QPS).

Note RAM users of an Alibaba Cloud account share the quota of the account.

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer. OpenAPI Explorer dynamically generates a sample code of the operation for different SDKs.

Request parameters

Parameter Type Required Example Description
Action String Yes QueryDeviceInfo

The operation that you want to perform. Set the value to QueryDeviceInfo.

IotInstanceId String No iot_instc_pu****_c*-v64********

The ID of the instance.

You do not need to specify this parameter.

ProductKey String No a1BwAGV****

The ProductKey of the product to which the device belongs.

Notice If you specify this parameter, you must also specify the DeviceName parameter.
DeviceName String No light

The DeviceName of the device.

Notice If you specify this parameter, you must also specify the ProductKey parameter.
IotId String No Q7uOhVRdZRRlDnTLv****00100

The ID of the device.

Notice If you specify this parameter, you do not need to specify ProductKey or DeviceName. The IotId parameter specifies a globally unique identifier (GUID) of the device, which corresponds to a combination of ProductKey and DeviceName. If you specify both IotId and the combination of ProductKey and DeviceName, IotId takes precedence.

In addition to the preceding operation-specific request parameters, you must specify common request parameters when you call this operation. For more information, see Common request parameters.

Response parameters

Parameter Type Example Description
Code String iot.system.SystemException

The error code returned if the call fails. For more information, see Error codes.

Data Struct

The information about the device returned if the call is successful.

DeviceName String light

The DeviceName of the device.

DeviceSecret String mz2Canp4GB7qRVf1OYPNtRqB2anu****

The DeviceSecret of the device.

IotId String Q7uOhVRdZRRlDnTLv****00100

The ID of the device. The ID is the unique identifier that is issued by IoT Platform to the device.

Nickname String detectors_in_beijing

The alias of the device.

ProductKey String a1rYuVF****

The ProductKey of the product to which the device belongs.

ErrorMessage String A system exception occurred.

The error message returned if the call fails.

RequestId String E55E50B7-40EE-4B6B-8BBE-D3ED55CCF565

The ID of the request.

Success Boolean true

Indicates whether the call was successful.

  • true: The call was successful.
  • false: The call failed.

Examples

Sample requests

http(s)://iot.cn-shanghai.aliyuncs.com/?Action=QueryDeviceInfo
&ProductKey=a1rYuVF****
&DeviceName=light
&<Common request parameters>

Sample success responses

XML format

<QueryDeviceInfoResponse>
  <RequestId>E55E50B7-40EE-4B6B-8BBE-D3ED55CCF565</RequestId>
  <Data>
        <IotId>Q7uOhVRdZRRlDnTLv****00100</IotId>
        <DeviceSecret>mz2Canp4GB7qRVf1OYPNtRqB2anu****</DeviceSecret>
        <ProductKey>a1rYuVF****</ProductKey>
        <Nickname>detectors_in_beijing</Nickname>
        <DeviceName>light</DeviceName>
  </Data>
  <Success>true</Success>
</QueryDeviceInfoResponse>

JSON format

{
    "RequestId": "E55E50B7-40EE-4B6B-8BBE-D3ED55CCF565",
    "Data": {
        "IotId": "Q7uOhVRdZRRlDnTLv****00100",
        "DeviceSecret": "mz2Canp4GB7qRVf1OYPNtRqB2anu****",
        "ProductKey": "a1rYuVF****",
        "Nickname": "detectors_in_beijing",
        "DeviceName": "light"
    },
    "Success": true
}

Error codes

HttpCode Error code Error message Description
200 Iot.common.QueryDeviceActionError An error occurred while querying the device. The error message returned because the system failed to query the device information.

For a list of error codes, visit the API Error Center.