The application for Shanghai High - Flying Electronics Technology Co., Ltd, which is used in the development of links to the company's wireless network equipment (smartLink), when the ios device link wifi network, open the application sends the wifi router password, if smartLink in standby state to monitor will send password, then according to the monitoring to the password link ios device wi-fi router, if smartLink successful link to the designated router will give users a success linked above, if the failure can give users a connection timeout. This application can realize single equipment link and multiple devices.