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