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# maxAcceleratorLevel

An integer value indicating the maximum pressure level for a button of type [`NSMultiLevelAcceleratorButton`](/documentation/AppKit/NSMultiLevelAcceleratorButton).

```
var maxAcceleratorLevel: Int { get set }
```

## Discussion

A multilevel accelerator button is a variation of a standard accelerator button that allows for a configurable number of stepped pressure levels in a system that supports pressure-sensitivity, such as the Force Touch trackpad. As each level is reached, the user receives light tactile feedback, and an action is sent.

You configure the number of pressure levels for a multilevel accelerator button by adjusting the value of [`maxAcceleratorLevel`](/documentation/AppKit/NSButton/maxAcceleratorLevel). For other types of buttons, this property value defaults to `1`. For multilevel accelerator buttons, this property value defaults to `2`, and may be set to a value between `1` and `5`.

The behavior of a multilevel accelerator button is reliant on a system that supports pressure sensitivity. On a system that doesn’t support pressure sensitivity, a multilevel accelerator button always has a value of `1` when the user clicks it.

## See Also

[`static const NSButtonType NSMultiLevelAcceleratorButton;`](/documentation/AppKit/NSMultiLevelAcceleratorButton)

A multilevel accelerator button is a variation of a normal accelerator button that allows for a configurable number of stepped pressure levels. As each one is reached, the user receives light tactile feedback and an action is sent.

[`static const NSButtonType NSAcceleratorButton;`](/documentation/AppKit/NSAcceleratorButton)

A button that sends an action when the user first clicks the button and continues sending actions until the user releases pressure entirely.


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