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