Ilyet használok :

https://www.ebay.com/itm/DC-12V-2CH-RF-433MHz-Wireless-Switch-Relay-Receiver-Module-With-Remote-Control/302410782474?_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D2%26asc%3D41375%26meid%3Dcb9d167468ff415a8568b8ec5a7ad1ce%26pid%3D100623%26rk%3D4%26rkt%3D6%26sd%3D361162717781&_trksid=p2047675.c100623.m-1