എഫ്എം റേഡിയോ ഉപയോഗിച്ച് എങ്ങനെ ലളിതമായ വയർലെസ് സ്വിച്ച് ഉണ്ടാക്കാം.
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The circuit of a FM wireless remote controller presented here is very easy to build and can be used to turn on a load anywhere within a radial distance of
50 meters. The above system is controlled through a mini FM transmitter circuit operating at around 100MHz FM radio. The Receiver is actually a ready made FM radio module, but any cheap FM radio modules or simple FM regenerative radio circuits can also be used.
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