ESP8266 Community Forum

Hi there, I would like to get some suggestion on what hardware could use to make 4 x wireless answer button. The idea is that once a remote battery power button is pressed it send a signal to nearby NodeMCU board to receive which button was pressed

I'm considering using 4ch 433mhz Tx/Rx Module, however the example I've seen requires an MCU an each end, I would like to keep the transmitter side of things as small as possible and I suspect there are better options. Any suggestions?

Thanks.