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The TEDIA repeaters MU-2485 are intended for galvanic separation of the communication line signals. It enables achieving longer distances and using more communication devices.

By its design, the repeaters are suitable for use in industrial applications. The repeaters are supplied from external source of 10÷30V. Both communication lines are isolated to the power supply and to each other (three-way isolation).

The repeaters provide the circuits for Automatic Data Flow Control (ADFC) at the both RS-485 interfaces. They also provide (like other converters and communication TEDIA PCI cards) overvoltage protection components.

The repeaters MU-2485 is a replacement type for MU-2485/12V and MU-2485/24V. It provides additional features, such as:


Type MU-2485
Primary/Secondary line RS-485
Signals TXD/RXD
Data transfer control ADFC
Transfer rate 600Bd÷115.2kBd
Surge protection TVS diodes 5V8/600W
Termination impedance 120Ω/1.3V
(as an option soldered on the PCB)
Type of isolation three-way
Isolation voltage 1kVDC
Supply voltage 10÷30VDC
Power consumption 2,6W max.
(110mA @24V, 280mA @10V)
Housing & Dimensions Modulbox 3M
Signal terminals screw terminals, wire 2.5mm2 max.

Note: The Automatic Data Flow Control (ADFC) feature detects incoming data on both lines and activates RS-485 drives for transmission on the second line automatically.