Westermo MD-44 / MD-44DC RS-442 / 485 Converter
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Westermo MD-44 / MD-44DC RS-442 / 485 Converter

This Westermo MD-44 / MD-44DC RS-442 / 485 Converter is used and in excellent condition.

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Stock # 79205-1
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Westermo MD-44 / MD-44DC RS-442 / 485 Converter

  • Galvanic Isolation
  • Transient Protection
  • AC or DC Operation
  • RS-232 to RS-485-422
  • Balanced Transmission
  • 2 or 4 Wire Operation
  • DIN-rail mounted, 35mm
  • No Control Signals Required
  • Fail Safe Termination Circuit
  • Long Range of Supply Voltages


The Westermo MD-44 / MD-44DC RS-442 / 485 Converter is designed to convert RS-232 signals to RS-4885/422. The transmitter circuit is activated in response to the incoming data on the RS-232 port, no RTS control is required. This device can be used on a point to point or multidrop network either a 4 wire or 2 wire bus system. The Westermo MD-44 / MD-44DC RS-442 / 485 Converter provides total galvanic isolation and transient suppression to ensure maximum reliability and protection in adverse conditions. Also, there can be up to 32 devices connected on a maximum of 1200m of cable. The transmission range will increase if a cable with lower capacitance and larger diameter is used. The Westermo MD-44 / MD-44DC RS-442 / 485 Converter has two different interfaces. Interface one is an EIA RS-232-C/CCITT V.24/V.28, 9-pin female or screw block. Interface two is an EIA RS-422/RS-485/V.11, detachable 5-pin screw block. The transmission speed of this unit is 300-38 400 bit/s.

Product Family: MD44, MD 44, MD-44

Important Notice: Please note that any additional items included with this equipment such as accessories, manuals, cables, calibration data, software, etc. are specifically listed in the above stock item description and/or displayed in the photos of the equipment. Please contact one of our Customer Support Specialists if you have any questions about what is included with this equipment or if you require any additional information.

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Westermo MD-44 / MD-44DC RS-442 / 485 ConverterWestermo MD-44 / MD-44DC RS-442 / 485 ConverterWestermo MD-44 / MD-44DC RS-442 / 485 Converter
Westermo MD-44 / MD-44DC RS-442 / 485 Converter

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Manuals, Datasheets, Drivers, Links

Westermo MD-44 Datasheet 
Westermo MD-44 Manual 
Link to Westermo Website 

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