Dry Contact Curtain Motor, (Buspro)
https://b2b.hdl-automation.cz/en/products/others/prvky-bez-sbernice/shading-system/curtain-track-for-hdl-210-230
https://b2b.hdl-automation.cz/en/products/others/prvky-bez-sbernice/shading-system/curtain-track-for-hdl-210-230