How 433MHz RF Module Works & Interfacing with Arduino
rf - Why are two different length antenna sold with this 433MHz module? - Electrical Engineering Stack Exchange
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ALAMSCN 5 Set 433 MHz RF Wireless Trasmettitore e Ricevitore Modulo + RF 433 MHz Rame Molla Antenna Kit per Arduino Raspberry Pi : Amazon.it: Elettronica
Trying radio RF 433Mhz, it's working with these 1$ transmitter/receivers, but not really great (poor range). What better solution did you use? : r/arduino