| Interface | Description | 
|---|---|
| AuthorizationCallback | |
| ChangeCharacteristicListener | 
 ChangeListener provides callbacks indicating whether Beacon characteristics has changed. 
 | 
| GattController | |
| KontaktDeviceConnection | 
 KontaktDeviceConnection connection allows to establish connection with beacon. 
 | 
| KontaktDeviceConnection.ConnectionListener | |
| KontaktGatewayConnection | |
| OnServiceReadyListener | 
 The listener indicating that Object implementing ServiceConnector interface
 ( 
ServiceConnector) successfully connected to the corresponding service. | 
| ReadListener<T> | 
 ReadListener provides callbacks indicating whether Beacon characteristics read manipulations ended successfully or failed. 
 | 
| SyncableKontaktDeviceConnection | 
 Syncable Kontakt device connection combines  
KontaktDeviceConnection and KontaktCloud functionality. | 
| WriteDescriptorListener | 
 WriteDescriptorListener provides callbacks indicating whether Beacon descriptor manipulation
 ended successfully or failed. 
 | 
| WriteListener | 
 WriteListener provides callbacks indicating whether Beacon characteristics manipulation
 ended successfully or failed. 
 | 
| Class | Description | 
|---|---|
| DeviceConnectionError | 
KontaktDeviceConnection possible errors. | 
| KontaktDeviceConnectionFactory | 
 Factory class used to obtain  
KontaktDeviceConnection, SyncableKontaktDeviceConnection instances. | 
| KontaktDeviceServiceStore | 
 Acts as a container of characteristics requested before authorization. 
 | 
| WriteListener.WriteResponse | 
 Object representing response from device after writing characteristic 
 | 
| Enum | Description | 
|---|---|
| ErrorCause |