---
title: numberOfVoltageMeasurements
framework: healthkit
role: symbol
role_heading: Instance Property
path: healthkit/hkelectrocardiogram/numberofvoltagemeasurements
---

# numberOfVoltageMeasurements

The number of voltage measurements associated with this sample.

## Declaration

```swift
var numberOfVoltageMeasurements: Int { get }
```

## See Also

### Accessing Voltage Measurements

- [samplingFrequency](healthkit/hkelectrocardiogram/samplingfrequency.md)
- [HKElectrocardiogram.VoltageMeasurement](healthkit/hkelectrocardiogram/voltagemeasurement.md)
- [HKElectrocardiogram.Lead](healthkit/hkelectrocardiogram/lead.md)