Weidmuller 7940000435 FrontCom® Vario Insert – 1-Slot Frame, with D-Sub 9-Pin (DB9) Cutout, Plastic

The 7940000435 is a modular insert plate. It features a precise "D-Hole" cutout specifically sized for a standard 9-pin D-Sub (DB9) connector, which is commonly used for RS-232 or RS-485 serial communication. By mounting a DB9 bulkhead connector into this plate and then snapping the plate into a FrontCom® Vario frame, you create a finger-safe external communication port.