Comnet Small Size RS232/422/485 2&4W Bi-directional Universal Data Transceiver mm 1 - FDX60M1BM

Comnet FDX60M1BM RS232/422/485 to Fiber Data Transceiver

Overview

The Comnet FDX60M1BM is a compact RS232/422/485-to-fiber converter that bridges serial data over single optical fiber, isolating ground loops and extending communication distance in mixed-media surveillance and access-control networks. It handles 2-wire or 4-wire RS485 protocol at DC to 250 kbps, supporting both multimode (up to 4 km) and single-mode fiber (up to 69 km) — choosing fiber reach depends on your camera, PTZ, or reader distance and backbone infrastructure. The unit draws 2 W at 9–30 VDC, fitting standard industrial PoE and auxiliary power budgets without strain.

Compatibility

Wire the FDX60M1BM's RS232, RS422, or 2/4-wire RS485 side to any serial camera control interface, PTZ head, or access-control reader that outputs those protocols — Pelco-D PTZ controllers, Hikvision serial interface cameras, or legacy CCTV equipment commonly use 485. The fiber side accepts ST connectors in multimode or single-mode (wavelength 1310/1550 nm selectable). Pair with a second FDX60M1BM unit at the remote end to complete the serial bridge, or integrate into a fiber backbone where serial channels are multiplexed with video on the same fiber strand. Recommended power supply: Comnet PS-A12060 (supplies 12V or 60V, depending on configuration).

Installation Notes

Operate the transceiver between −40 °C and +75 °C; storage to +85 °C. Relative humidity 0–95% (non-condensing) is acceptable. The unit is rated for industrial duty with MTBF >100,000 hours. ST fiber connectors require careful alignment and dust caps during deployment — dirt on the ferrule will degrade optical signal and introduce bit errors (rated <10⁻⁹ at nominal power levels). Multimode fiber provides a 16 dB optical power budget (sufficient for 4 km typical building backbones); single-mode delivers 23 dB (69 km reaches across large properties or metropolitan spans). Choose your fiber plant at install time — mixing fiber types requires a second transceiver unit tuned to the same wavelength and fiber class at the far end.

What's in the Box

• 1x Comnet FDX60M1BM transceiver
• 1x ST-to-ST single-mode or multimode fiber patch cord (length and type per order)
• 1x mounting bracket (1 rack slot or wall-mount adapter)
• 1x RJ-45 power connector
• 1x DB-9 serial connector (RS232) or screw-terminal connector (RS422/485)