An 8-pin circular connector is used to connect (or daisy chain) AISG devices. AISG consortium has released the C485 standard for this RS-485 connector. This standard specifies the mechanical dimensions of the connector more tightly than the previously used standard (IEC 60130-9 - Ed. 3.0 standard with screw-ring locking ring). The C485 standard also specifies the IP rating of this connector to be IP68. This new standard was created to avoid connection problems between connectors from different manufacturers.
