---
title: HKElectrocardiogram.VoltageMeasurement
framework: healthkit
role: symbol
role_heading: Class
path: healthkit/hkelectrocardiogram/voltagemeasurement
---

# HKElectrocardiogram.VoltageMeasurement

The voltage for all leads at a single point in time.

## Declaration

```swift
class VoltageMeasurement
```

## Topics

### Accessing Data

- [quantity(for:)](healthkit/hkelectrocardiogram/voltagemeasurement/quantity(for:).md)
- [timeSinceSampleStart](healthkit/hkelectrocardiogram/voltagemeasurement/timesincesamplestart.md)

## Relationships

### Inherits From

- [NSObject](objectivec/nsobject-swift.class.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSCopying](foundation/nscopying.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Electrocardiograms

- [HKElectrocardiogram](healthkit/hkelectrocardiogram.md)