Belden Inc. 6541FD RS485 Osdp Reader Cable 2pr 22AWG

Product Description

The BELDEN INC. 6541FD is a multi-conductor communication cable engineered for RS485 data transmission and OSDP reader wiring applications. It is constructed with two pairs of 22 AWG stranded tinned copper (TC) conductors and insulated with FEP (fluorinated ethylene propylene), a material chosen for its thermal stability, low smoke characteristics, and resistance to chemicals and abrasion. Licensed electricians and low-voltage systems integrators typically install this cable in access control, security, and building automation projects where reliable RS485 signal integrity is required.

This cable is suited for use in commercial and institutional buildings where access control readers, panels, and controllers communicate over RS485 serial bus or OSDP (Open Supervised Device Protocol) wiring runs. Its FEP insulation makes it appropriate for plenum or high-temperature routing environments. Installers working on card reader infrastructure, door controllers, and intercom systems will find this cable fits standard wiring practices for supervised device communication.

Key Features

• RS485 and OSDP reader wiring application
• 2-pair, 22 AWG stranded tinned copper conductors for flexibility and conductivity
• FEP insulation for high thermal resistance and low smoke emission
• Stranded TC construction for repeated flex and routing through conduit
• Designed for reliable signal integrity on serial data bus runs

Compatibility

Designed as an OEM-style replacement and standard-fit cable for RS485 serial bus and OSDP reader wiring systems in commercial access control and building automation installations.

Installation Notes

Installation should be performed by a licensed low-voltage or electrical contractor in accordance with applicable NEC requirements for communication and signal cables. Power down all connected access control equipment and readers before making terminations. Maintain consistent polarity on RS485 differential pairs throughout the run to avoid signal errors. Do not route signal cable in the same conduit as high-voltage power conductors without appropriate separation.