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FS100A 433 MHz Radio Transmitter+Receiver Module Arduino 433 MHz | Arduino, DIY \ Communication \ Radio (433 MHz and Other)
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Amazon.com: RF Development Tools Adafruit RFM69HCW Transceiver Radio Breakout - 433 MHz (1 piece) : Electronics
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Adafruit RFM69HCW Transceiver Radio Breakout - 433 MHz [RadioFruit] : ID 3071 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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