RXB12 315Mhz Superheterodyne Receiver Board Wireless Receiver Module High Sensitivity
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If you want a 433Mhz receiver, I recommend https://www.banggood.com/DC35V-AK-119-433_92MHZ-4-Pin-Superheterodyne-Receiver-Board-Without-Decoding-105dBm-Sensitivity-p-1353453.html, which works. This one will not work without some soldering or changing of the electronics.
all ok
All fine! Thanks!
Good quality