readAttributeAverageRmsUnderVoltage(completion:)
Declaration
func readAttributeAverageRmsUnderVoltage(completion: @escaping @Sendable (NSNumber?, (any Error)?) -> Void)func readAttributeAverageRmsUnderVoltage() async throws -> NSNumberfunc readAttributeAverageRmsUnderVoltage(completion: @escaping @Sendable (NSNumber?, (any Error)?) -> Void)func readAttributeAverageRmsUnderVoltage() async throws -> NSNumber