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