C091 series connectors are available with 3-8 contacts,threading couping,it can exchangeable with Amphenol C091 A/B/D & BINDER 423 series,meet DIN45326 standard.All connectors of C091 series are EMI protected and IP67 proof.Main applications for C091 connectors are industrial controls,data processing,instrumentation,medical devices,telecommunication network and equipment,outdoor and marine application,Cable connector main applications for 3G Tower Mounted Amplifier,Base Stations.