Home Products Custom-OEM Downloads About Us Shopping Cart Support

USB to RS-485 Converters

The USB-485 is a fully automatic plug-and-play USB module that connects to your PC via the Universal Serial Bus (USB) port and provides robust USB to RS-485 protocol conversion with fully automatic RS-485 flow control. Simply use the standard comport or tty interface to automtically connect to RS-485 over USB.

It provides excellent protection for the PC and has transient spike supression on the RS-485 and USB data lines. In addition, the USB-485 is rated for industrial extended temperature range.
  • Fully automatic RS-485 multi-drop via USB
  • RS-485 speeds from 300 bps to 3.0 Mbps (OS dependent)
  • Up to 32 RS-485 nodes on a single twisted pair
  • USB High Speed 12.0 Mbps (USB 2.0 compliant)
  • USB bus powered (fuse protected - auto reset fuse)
  • Transient suppression on USB and RS-485
  • ESD protected to 15kV (RS-485 transceiver)
  • TX, RX, and Power LED indicators
  • Extended temperature -40°C to 85°C
Device drivers are built into Windows 7 and Linux. All other operating systems are well supported including: MAC OS X, Windows XP, Windows 2000, etc.



Model Interface Style Distance Temperature Documentation Price
USB-485 USB 'B'

RS485 terminals
standard 4000 feet -40°C to +85°C $49.00

Model USB-485
USB-485

Click images to enlarge
Specifications: USB to RS-485 Converters
RS-485 Data Rates 300 bps to 3.0 Mbps (depending on OS and drivers)
RS-485 Flow Control Fully automatic RS-485 drive enable multi-drop
RS-485 Distance Up to 4000 ft.
RS-485 Connection Terminal block for A/B data lines
USB Data Rate 12 Mbps
USB Distance 6 foot cable
USB Connection USB B female
Status LED's Red RS-485 TX
Green RS-485 RX
Yellow LED USB Power
Power Requirements USB Bus Powered (250 ma. maximum, < 90 ma. typical)
Temperature Extented -40°C to +85°C