New device: 3T Motors Shutter control

Hi, I am using very cheap shutter controls from 3T Motors (not supported by OpenHab).
https://www.3t-motors.de/3T-Funk-Steuerungen/3T-Funk-Wandsender-1-Kanal-WS1.html
I use a RasPi 3 and Pilight to control them. A 433 MHz transmitter connected to the RasPi pins works well to send commands. I was able to create a protocol (which works!) for Pilight to send UP, DOWN and HOLD commands for each unit. Now I want to switch to OpenHAB without any additional software. Is there an easy way to use the working Pilight device protocol for a future integration into OpenHab? Sorry, I am a Newbie to OpenHab…