As i understand now, a Somfy Tahoma is an expensive bridge which i do not have, and RTS devices can be controlled by a much cheaper usb stick like ( nanoCUL USB Stick FTDI CC1101 433MHz FW 1.67 FHEM CCU / CCU2 Knick-Antenne FHEM CUL 433 + Adapter ) but i am just getting into this whole IoT thing and search for someone who already has this workling.
Never the less your right, i just fund some more informations here culfw-somfy-rts