it basically enables you to control most rc-sockets and radio led strip
controller receivers
also you can (learn and) listen to signals of many rc remote controls
and e.g. act as if you were a standard rc-socket
search for "xkfst 433mhz transmitter reciever module kit" to find
thousands of offers of the (very) inexpensive hardware used
see https://github.com/sui77/rc-switch/ for info about the rc-switch library.
it basically enables you to control most rc-sockets and radio led strip controller receivers also you can (learn and) listen to signals of many rc remote controls and e.g. act as if you were a standard rc-socket
search for "xkfst 433mhz transmitter reciever module kit" to find thousands of offers of the (very) inexpensive hardware used