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USB to Serial RS232 Adapter - Fully Isolated

  • Model: GH-UR201
  • In Stock


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This USB to serial RS232 converter has one RS232 port which is fully isolated from the USB port. It us built around the FT232RL processor chip which is one of the best serial conversion chips on the market.
Isolation is made using the ADM3251E chip from Analog Devices which offers 2.5 kV fully isolated (power and data) communication with a data rate of up to 460 kbps. ESD protection on the TX and RX pins is up to ±8 kV contact discharge and
±15 kV air gap discharge.
This is a very effective solution for protecting your USB port and serial device against most types of power surges, static electricity, voltage spikes and transients. Ideal for industrial applications, and suited for operation in electrically harsh environments or where RS-232 cables are frequently being plugged and unplugged.

The enclosure is made of sturdy sheet metal tht won't easily break. Included with the converter are DIN mount brackets so you can easily mount this converter on a standard DIN rail. Included are also screw mount brackets so it can be mounted on a flat surface using screws.

The converter is powered through the USB port so no external power supply is needed.
LED indication lights indicates when data is sent and received.

Overall features
  • One RS232 port
  • Fully isolated
  • Industrial grade
  • DIN-rail mountable
  • Wall mountable
  • USB port powered
  • TX, RX status lights
  • Easy driver installation
Included items

  • 1 x Converter
  • 1 x USB cable
  • DIN mount kit
  • Wall mount kit
  • Mounting screws

Useful optional accessories
(not included)

Null modem adapter
Null modem adapter

DB9 to RJ45 adapter
DB9 - RJ45 adapter

DB9 gender changer
Gender Changer

Part number GH-UR201
Operating system
  • Windows 11, 10, 8.1, 8 (32/64-bit), Windows Server 2016, Windows Server 2012 / R2, Windows 7 (32/64-bit), Windows Server 2008 R2, Vista (32/64-bit), Windows Server 2008 (32/64-bit), XP, Windows Server 2003 (32/64-bit), 2000, (all WHQL compliant). Windows RT as D2XX drivers only.
  • Windows CE v4.2 - 5.2, 6.0, 7.0 and 2013 including: Windows Mobile 2003, 2003 SE, Windows Mobile 5, 6, 6.1 and 6.5
  • Linux (built into kernel 3.0.0-19 and above)
  • Mac OS 8, OS 9, OS X 10.3 to 10.9 and above
  • Android
Processor FT2232RL
RS232 Interface RS232 DB9 Male x 1
Isolation ADM3251E. 2.5 kV fully isolated (power and data)
Cable length 75 inches / 190cm
USB interface Standard Type B Female
Indication LEDs TX, RX
Ports 1-port
Signals TX, RX, RTS, CTS, DTR, DSR, RI and GND
Power on pin 9 No
Baud rate Up to 460 kbps
Parity None, Odd, Even, Mark, Space
Data Bits 7, 8
Stop Bits 1, 2
TX / RX buffer size 128 Byte Transmit Buffer / 384 Byte Receive Buffer
Adjustable USB transfer sizes for TX and RX From 64 bytes to 4096 bytes
Adjustable latency timer 1 to 255 msec
Adjustable read and write timeouts 0 to 10000 msec
Flow Control None, Xon/Xoff, Hardware
COM port accessible by Included virtual COM port drivers or FTD2XX.DLL
Special features
Electrostatic (ESD) protection ESD protection on TX and RX:
±8 kV: contact discharge
±15 kV: air gap discharge
High common-mode transient immunity: >25 kV/μs
Power Port powered from USB port
Current draw  
Housing Aluminum
Dimensions 65 x 50 x 25 mm without mounts
Weight 129g
Interface compliance USB1.1,2.0,3.0, EIA/TIA RS-232
Regulatory compliance FCC, CE and RoHS
Operating temp -40°C to 85°C, 5% to 85% humidity
Warranty 1 year limited warranty

For alternative USB to serial solutions please see our full selection of USB to Serial RS232 adapters

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