Marshall Electronics Y-ADP-RS232 RJ45 RS-232 Cable Adapter

Marshall's two PTZ controllers land RS-232 on different connectors: the VS-PTC-300 uses RJ45, the older VS-PTC-200 uses a mini-DIN. The Y-ADP-RS232 solves both from one part. A short tail leaves the camera and splits into an RJ45 plug and a mini-DIN connector, with an RJ45 socket on the opposite end for the run out to the controller.

It is an optional accessory for the CV620-BI2 and CV620-WI2 cameras, and Marshall publishes a wiring instruction sheet for it alongside the CV620 and CV625 manuals. Where a room already has a controller and cable installed, this is the piece that avoids re-terminating anything to bring a new camera onto the existing control run.