Dry Contact Curtain Motor(KNX)
https://b2b.hdl-automation.cz/en/support/products/data-sheets/buspro/stinici-systemy/hdl-230-dry-contact-curtain%EF%BC%88220vac%EF%BC%89english
https://b2b.hdl-automation.cz/en/support/products/data-sheets/buspro/stinici-systemy/hdl-230-dry-contact-curtain%EF%BC%88220vac%EF%BC%89english