***

id: 81e76dd3-c7f9-4497-882f-55e656ed859e
title: Relay.Calling.DetectAction
slug: /python/reference/calling/actions/detect
description: 'The Detect Action is used to detect DTMF, fax tones, or answering machines.'
max-toc-depth: 3
----------------

[relay-calling-detectresult]: /docs/server-sdk/v2/python/reference/calling/results/detect

[relay-calling-stopresult]: /docs/server-sdk/v2/python/reference/calling/results/stop

## Relay.Calling.DetectAction

This object returned from one of the *asynchronous* detect methods that represents a running detector on the call.

### Properties

| Property     | Type                                                       | Description                                   |
| ------------ | ---------------------------------------------------------- | --------------------------------------------- |
| `result`     | [`Relay.Calling.DetectResult`][relay-calling-detectresult] | Final detector result.                        |
| `completed`  | `boolean`                                                  | Whether the action has finished.              |
| `payload`    | `dict`                                                     | Payload sent to Relay to start this detector. |
| `control_id` | `string`                                                   | UUID to identify the detector.                |

### Methods

#### stop

Stop the action immediately.

**Parameters**

*None*

**Returns**

`coroutine` - Coroutine that will return a [`Relay.Calling.StopResult`][relay-calling-stopresult] object.

**Examples**

Trying to detect a machine and stop the action after 5 seconds:

```python
import asyncio # to use sleep

action = await call.detect_answering_machine_async()
# For demonstration purposes only..
await asyncio.sleep(5)
await action.stop()
```