USB-i485 Isolated USB to RS-422/RS-485 Converter

USB-i485 Isolated USB to RS-422/RS-485 Converter

SKU: COV-001

Robust USB converter for four-wire (full duplex) RS-422 and RS-485 or two-wire (half duplex) industrial serial busses. 1.5 kVDC isolation between PC and serial bus. Best-of-class drivers.

  • Manufacturer: Novus
Buy more for less:
1-4items$97.41/ each 
5-9items$87.67/ eachsave10%
10or more items$82.80/ eachsave15%
  • $97.40
In stock(14 items available)

One of our most popular products. The Novus USB-i485 module is a cost-effective way to convert RS-485 or RS-422 industrial buses to a USB interface. When connected to a PC USB port the USB-i485 module is automatically detected and is installed as a native serial port which is compatible with any existing serial communication application.

Multiple modules can be installed when using USB hubs thus allowing a hassle-free configuration of a multi serial system without any IRQ or DMA configuration.

1500 VDC isolation between the USB port and RS-485/RS-422 along with ±60 VDC and 15 kV ESD bus protection provides a robust and safe connection from the PC to equipment.

The USB-i485 converter can be configured for four-wire (Full Duplex) RS-422 and RS-485 or two-wire (Half Duplex) networks. When operating in two-wire RS-485 the data transfer control is automatically done by the converter.

Two independent and isolated RS-485 networks can be supported by one USB-i485 module thus duplicating the possible number of remote devices. Each RS-485 network can operate in an independent direction allowing for full duplex RS-485 connection.


  • USB V1.1 Plug and Play
  • Appears as a serial (COM) port
  • Jumper selected RS-485 / RS-422
  • Automatic flow control for RS-485 Half Duplex
  • Data transmission and reception LED indicators
    • SKU
    • Weight
      0.15 kg
    • Dimensions (L x W x H)
      12.5 x 7.5 x 7 cm

Power supply: From USB port

Power consumption: ≤100 mA

Transmission rate: 300 bps to 1 Mbps

Max. Devices in the RS-485 network: 

  • Half Duplex: 2 x 32 devices
  • Full Duplex: 32 devices

 Isolation (USB to serial interfaces): 1500 VDC

RS-485/RS-433 Bus Protection: ±60 VDC, 15 kV ESD

USB Connection: Mini-B Connector

Maximum RS-485/RS-422 cable length: 1200 m

RS-485/RS-422 connector: Screw terminal for ≤1.5 mm² (≤16 AWG) wires.

Internal resistors: 120 Ω Termination enabled by jumpers

Wide operating system support:

  • Supports Windows 98/ME/XP/2000/CE/Vista/7, 32 bit and 64 bit
  • Supports Mac OS 8.6 to OS X
  • Linux 2.4.20 or later.

Operating environment: 0 to 70 °C, 10 to 90% RH, non-condensing.

Enclosure: 70 × 60 × 18 mm ABS

Faulty Goods and Warranty

Where such goods have been supplied we undertake to repair or replace them as quickly as possible.Prior to returning faulty items, please contact us with a description of the fault as one of our engineers might be able to assist you by resolving the issue over the phone.
A Warranty form must be filled out and returned with any goods.

Our standard warranty period is 12 months from the date of purchase unless stated otherwise.

Other warranty periods:

Labjack Products: 5 Years
Atop Products: 3 Years
MeanWell Products: 3 Years
Terracom Products: 3 Years

Warranty is subject to us being satisfied that a defect was caused by defective workmanship or materials and was not caused by or was not substantially contributed to by other factors beyond our control including incorrect installation, alterations or modifications of the product not recommended by the manufacturer.

Returns Policy

If you are dissatisfied with our goods you may return them within 14 days of the dispatch date. Contact us for an authorisation and we will refund your purchase less shipping costs and restocking fees. All returned goods MUST be in AS NEW condition including ALL PACKAGING and DOCUMENTATION / MANUALS etc.

Please note:

  • The product returned will attract a 20% restocking fee.
  • The customer must pay the delivery costs.
  • Non standard, custom made or a specially manufactured or imported products are not returnable.
  • Semiconductors, books and software are not refundable

Full Terms and Conditions

By placing an order with Ocean Controls, you agree to be bound by our Terms and Conditions of Trade.

Related products

Customers who viewed this product also bought