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