Call this interface before performing 4G unlocking to query the status of the built-in 4G direct connection module based on the door lock ID and determine whether the module is bound, online, or offline.Result description: 0 - Not bound, 1 - Online, 2 - OfflineAdditional notes: The interface returns the current status of the module. The 4G unlocking operation can only be performed when the status is 1 (online). You can only query door lock devices bound under the current username; devices without permission cannot obtain module status information. It is recommended to call this interface before each 4G unlocking to ensure that the module is online and to avoid command delivery failure.