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