4 Zone Dry Contact Module(KNX)
https://b2b.hdl-automation.cz/en/support/products/data-sheets/knx/binary-inputs-and-outputs/data-sheet-m-s04-1_en_v1-0-0
https://b2b.hdl-automation.cz/en/support/products/data-sheets/knx/binary-inputs-and-outputs/data-sheet-m-s04-1_en_v1-0-0