---
title: typicalAttenuation
framework: exposurenotification
role: symbol
role_heading: Instance Property
path: exposurenotification/enscaninstance/typicalattenuation
---

# typicalAttenuation

The aggregation of the attenuations of beacons received during the scan.

## Declaration

```swift
var typicalAttenuation: ENAttenuation { get }
```

## Discussion

Discussion important: This property is available in iOS 12.5, and in iOS 13.7 and later.

## See Also

### Getting Scan Instance Properties

- [minimumAttenuation](exposurenotification/enscaninstance/minimumattenuation.md)
- [secondsSinceLastScan](exposurenotification/enscaninstance/secondssincelastscan.md)