emitting devices

Hello
I would like to ask if anyone knows how to build a module to read the signal from 433 mhz emitting devices

alarmas-para-casa:
Hello
I would like to ask if anyone knows how to build a module to read the signal from 433 mhz emitting devices

Sure, lots of people do, but it SO much cheaper to just buy one and actually have some digital output pins, if that is what you are after.

Paul