發送短信 : Power supply of internet of things (IoT)

  _____      ___      _____      ___      _____   
 / ____||   / _ \\   / ____||   / _ \\   |__  //  
/ //---`'  / //\ \\ / //---`'  / //\ \\    / //   
\ \\___   |  ___  ||\ \\___   |  ___  ||  / //__  
 \_____|| |_||  |_|| \_____|| |_||  |_|| /_____|| 
  `----`  `-`   `-`   `----`  `-`   `-`  `-----`