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Amazon.com: Gowoops 5 Sets of 433Mhz RF Transmitter and Receiver Link Kit for Arduino (2pcs/Set) : Electronics
HALJIA DC3V-5.5V RXB6 433Mhz RF Superheterodyne Wireless Receiver Modu
Amazon.com: Gowoops 5 Sets of 433Mhz RF Transmitter and Receiver Link Kit for Arduino (2pcs/Set) : Electronics
Hailege RC522 13.56Mhz RFID RC522 RFID Reader 13.56mhz IC Card MFRC522 RF Module UART TTL Interface for Arduino: Amazon.com: Industrial & Scientific
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RF Communication Range - Project Guidance - Arduino Forum
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