Turck Tn-Em18Wd-H1147-Ex Read-Write-Heads 7030382 MSRP: Now: $495.80 Was: Read/write Head, ATEX category II 3 G, Ex zone 2, ATEX category II 3 D, Ex zone 22, Threaded barrel, M18 x 1, Stainless steel, 1.4404, Front cap made of liquid crystal polymer, High protection class... TN-EM18WD-H1147-EX