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  ____     \ \\/ //  | \| ||  |  ___|| |      \\ 
 |    \\    \ ` //   |  ' ||  | ||__   |  --  // 
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 |_|`-`      `-`'    `-` -`   `-----`  `------`  
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發送短信 : Ultra-wideband impulse radio based temperature sensor network