The rf-ctrl tool is now able to control plugs and rolling shutter controllers from the well known Somfy and Blyss brands. Regarding Somfy, only the 433,42 MHz RTS protocol is supported, but devices based on it are still widely available. Of course, most 433 MHz transmitters work at 433,92 MHz, which is obviously off compared to the 433,42 MHz used by Somfy. However, it works well enough, even if the range is a little bit smaller compared to what you could get with a proper 433,42 MHz transmitter.