No, the DUO is not ATEX certified
A workaround would be to put the DUO in an ATEX safe box/container or simply outside the ATEX area. Then the ATEX sensor used needs to connect to the DUO through an isolator of some sort (also ATEX certified).
Note: You can't just take a cable directly from the ATEX sensor into the DUO. That would not be safe.