readAttributeAverageRmsVoltageMeasurementPeriodPhaseB(completion:)

Declaration

func readAttributeAverageRmsVoltageMeasurementPeriodPhaseB(completion: @escaping  @Sendable (NSNumber?, (any Error)?) -> Void)

func readAttributeAverageRmsVoltageMeasurementPeriodPhaseB() async throws -> NSNumber