***

id: bc07c8a1-c7a2-4392-a1d7-cfa73851a6ea
title: DetectAction
slug: /go/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/go/reference/calling/results/detect

## Relay.Calling.DetectAction

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

### Methods-submenu

#### GetResult

Returns the final detector result.

**Parameters**

*None*

**Returns**

DetectResult

[`Relay.Calling.DetectResult`][relay-calling-detectresult] - Final detector result.

**Examples**

> Trying detecting DTMF and grab the result when it's completed.

```go
var det signalwire.DetectMachineParams

detectMachineAction, err := resultDial.Call.DetectMachineAsync(&det)
if err != nil {
	signalwire.Log.Error("Error occurred while trying to start answering machine detector")
}

time.Sleep(15 * time.Second)

if !detectMachineAction.GetCompleted() {
	detectMachineAction.Stop()
}

for {
	time.Sleep(1 * time.Second)

	if detectMachineAction.GetCompleted() {
		signalwire.Log.Info("Machine Detection Successful(%v)\n", detectMachineAction.GetSuccessful())
		break
	}

	signalwire.Log.Info("Last Machine event: %s Result: %v\n", detectMachineAction.GetDetectorEvent().String(), detectMachineAction.GetResult())
}
```

#### GetCompleted

Return `true` if detector has finished, `false` otherwise.

**Parameters**

*None*

**Returns**

`Boolean` - True/False accordingly to the state.

**Examples**

> Trying detecting DTMF and check if it has finished.

```go
var det signalwire.DetectMachineParams
detectMachineAction, err := resultDial.Call.DetectMachineAsync(&det)
if err != nil {
		signalwire.Log.Error("Error occurred while trying to start answering machine detector")
}
if !detectMachineAction.GetCompleted() {
	detectMachineAction.Stop()
}
```

#### Stop

Stop the action immediately.

**Parameters**

*None*

**Returns**

StopResult

**Examples**

> Trying detecting a machine and then stop the action.

```go
var det signalwire.DetectMachineParams
detectMachineAction, err := resultDial.Call.DetectMachineAsync(&det)
if err != nil {
		signalwire.Log.Error("Error occurred while trying to start answering machine detector")
}
detectMachineAction.Stop()
```

#### GetControlID

Return the UUID to identify the action.

**Parameters**

*None*

**Returns**

`string` - UUID to identify the action.

**Examples**

> Start a detector and print the controlId.

```go
var det signalwire.DetectMachineParams
detectMachineAction, err := resultDial.Call.DetectMachineAsync(&det)
if err != nil {
		signalwire.Log.Error("Error occurred while trying to start answering machine detector")
}
Signalwire.Log.Info("Detector ControlID: %s\n",  detectMachineAction.GetControlID())
```