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# Attenuation

The minimum and maximum signal attenuations.

## Discussion> Important:
> This property is available in iOS 12.5, and in iOS 13.6 and later.

## Topics

### Constants

[`var ENAttenuationMax: Int`](/documentation/ExposureNotification/ENAttenuationMax)

The value that is the maximum for attenuation.

[`var ENAttenuationMin: Int`](/documentation/ExposureNotification/ENAttenuationMin)

The value that is the minimum for attenuation.


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