Kramer FF11N-4 Unidirectional RS232 Configurable Filter

The Kramer FF11N-4 filters serial data using configurable rules and a one-way transfer path. Regex-based filtering allows an integrator to define permitted serial content.

FF11N-4 Detailed Features

• Pass serial information in one direction. The isolator uses an optical data-diode architecture to forward RS-232 data while preventing a return signal along that path. It supports controlled information transfer between otherwise separated systems.
• Define which messages may pass. Regular-expression filtering lets the integrator create rules for permitted or blocked content. This is useful when only specific status messages, events, or control commands should cross the boundary.
• Match the serial connection to the application. Configurable communication parameters, including baud rate and parity, allow the device to be commissioned for the connected equipment. Both endpoints must be set to compatible parameters.
• Support monitoring and control workflows. The manufacturer identifies applications such as SCADA communications, synchronization, and control commands. Choose the data direction and filtering rules to match the intended operational workflow.
• Integrate with existing RS-232 equipment. The isolator is designed to operate transparently between serial devices. Its value is in enforcing the transfer path and content rules rather than requiring a new networked interface on each endpoint.
• Allow space for installation and power. The compact enclosure uses an external 12V supply. Plan the mounting location, serial wiring, and power connection together so the isolation boundary remains clear and serviceable.