1# @ohos.bluetooth.constant (Bluetooth Constant Module) (System API) 2 3The **constant** module provides definitions of the constants used in Bluetooth. 4 5> **NOTE** 6> 7> - The initial APIs of this module are supported since API version 10. Newly added APIs will be marked with a superscript to indicate their earliest API version. 8> - This topic describes only the system APIs provided by the module. For details about its public APIs, see [@ohos.bluetooth.constant (Bluetooth Constant Module)](js-apis-bluetooth-constant.md). 9 10## Modules to Import 11 12```js 13import { constant } from '@kit.ConnectivityKit'; 14``` 15 16## AccessAuthorization<sup>11+</sup> 17 18Enumerates the access permissions. 19 20**System API**: This is a system API. 21 22**System capability**: SystemCapability.Communication.Bluetooth.Core 23 24| Name | Value | Description | 25| ------------------ | ---- | ------ | 26| UNKNOWN<sup>11+</sup> | 0 | Unknown.<br>This is a system API. | 27| ALLOWED<sup>11+</sup> | 1 | Access allowed.<br>This is a system API. | 28| REJECTED<sup>11+</sup> | 2 | Access rejected.<br>This is a system API.| 29