Hi Plsoong,
just checked, even if U buy a FCC module for CE Sekonic 758DR, it WILL NOT WORK...
Quoted from the last paragraph, http://www.bhphotovideo.com/c/product/221079-REG/Sekonic_401_621_Digital_Radio_Transmitter_Module.html
Do not install a CE marked module into an FCC marked meter or...