... testing box FirstMainly used in mobile phones, walkie-talkies, wireless LAN, Ethernet module, wireless PCMCIA, etc. when tested in production from design and ... N connector internal interface 25-pin D-type RF Interface N-type RF connector SMA type, etc.Data interface DB9 and DB25 connector ... are shielded plug-filtering processing.4, door gap reed type refers to the use of beryllium copper to ensure good ...