HF Read/Write Head. For Explosion Hazardous Areas. Ident. no.: 100020166. Smooth barrel. Ex e terminal chamber with tension springs. Housing made of V2A stainless steel. Front cap made of liquid crystal polymer. Laser-engraved label, permanently legible. Plastic front cap (active face) must be free of metal (non-flush mounting). Powered and operated only via connection to BL ident interface module. M12 × 1 connector, connection only via BL ident extension cable. ATEX category II 2 G, Ex Zone 1. ATEX category II 2 D, Ex Zone 21