---
name: "startBLEMeshLowPowerConnection"
mode: "kit"
versionRequirements:
  - { name: "DeviceKit", version: "2.2.7" }
  - { name: "@ray-js/ray", version: "0.6.23" }
platform:
  - "iOS"
  - "Android"
async: true
---

## startBLEMeshLowPowerConnection

> [VERSION] DeviceKit >= 2.2.7 | @ray-js/ray >= 0.6.23

> [PLATFORM] iOS, Android

> ⚡ **Supports Promise** — Returns a Promise when success / fail / complete callbacks are omitted.

### Description

Initiate a Bluetooth mesh device connection. This method only performs the connect action; connection status is obtained via the 【onTYBLEConnectStatusChange】 event

### Parameters

| Property | Type | Required | Default | Since | Description |
| --- | --- | --- | --- | --- | --- |
| `deviceId` | `string` | Yes | - | `2.2.7` | deviceId Device ID |
| `complete` | `() => void` | No | - | - | Completion callback (executed on both success and failure) |
| `success` | `() => void` | No | - | - | Callback on successful API call |
| `fail` | `(params: Object) => void` ↓see below | No | - | - | Failure callback |

#### fail callback parameters

| Property | Type | Description |
| --- | --- | --- |
| `errorMsg` | `string` | Error message |
| `errorCode` | `string \| number` | Error code |
| `innerError` | `Object` | Error extension |

##### fail(params).innerError properties

| Property | Type | Description |
| --- | --- | --- |
| `errorCode` | `string \| number` | Error extension code |
| `errorMsg` | `string` | Error extension message |


### Examples

#### Basic usage

```tsx
import { device } from '@ray-js/ray'

const { startBLEMeshLowPowerConnection } = device;

startBLEMeshLowPowerConnection({
  deviceId: 'device_001',
  success: () => {
    console.log('startBLEMeshLowPowerConnection success');
  },
  fail: (error) => {
    console.log('startBLEMeshLowPowerConnection fail', error.errorMsg);
  },
});
```