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