Product Category

Got any Questions? Call us Today!


Or leave us a message

Online Message

Industrial USB to 2-Port RS485 Converter (6KV lightning protection)

View : 281
Type : USB to RS485 Converter
Description :

This device's basic function is USB to 2-port 6KV lightning protection high-speed RS485 conversion.


This device’s basic function is USB to 2-port 6KV lightning protection high-speed RS485 conversion. The device is powered through the USB port, eliminating the need for an external power source. It utilizes a unique zero-delay automatic transceiver conversion technology, making it plug-and-play compatible with all software. It also features transmit/receive enable control, where it outputs a high-impedance state when in standby mode without transmitting data. Additionally, it supports multi-point communication.


Setting it apart from other similar inexpensive products on the market, this product offers the following features:

Industrial-grade operating temperature range (-40°C to +85°C)

6KV lightning protection for the serial ports (10/700μs current wave, internal resistance of 40Ω)

Gold-plated USB with built-in TVS protection (±15kV for air discharge and ±8kV for contact discharge)

It has 5 LED lights: power (red), receive for the 2 serial ports (orange), and transmit for the 2 serial ports (green).


The device provides a full-speed USB device interface that is compatible with USB v2.0.

It emulates standard serial ports, allowing for the upgrade of existing peripheral devices or the addition of additional serial ports through USB.

It is fully compatible with serial port applications on Windows operating systems, requiring no modifications.

The hardware includes built-in transmit/receive buffers. The 2-port RS485 interface supports communication baud rates ranging from 1200bps to 10Mbps.

It is suitable for operating systems such as Win98/2K/XP and WIN10/WIN11 32/64-bit systems.

The communication cable should be shielded twisted pair with a minimum cross-sectional area of 0.5mm copper. The maximum communication distance is 3000 meters (4800bps), 2000 meters (9600bps), or 1000 meters (115.2Kbps).

It can accommodate a minimum of 128 network nodes, with the maximum number of network nodes determined by the RS485 input impedance of each node.

It has 5 LED status indicators: power (red), receive data for the two serial ports (orange), and transmit data for the two serial ports (green), facilitating status monitoring.

The USB port is gold-plated, and the device is powered through USB. The operating current is less than 30mA. The USB interface provides protection against electrostatic discharge up to ±15kV (air) and ±8kV (contact). It also offers EFT protection up to 40A (5/50ns) and lightning protection up to 5A (8/20us).

The 2-channel RS485 interface is equipped with three-level lightning protection, meeting the GB/T17626.5 (IEC61000-4-5) standard. It provides a short-circuit current wave of 10/700μs and an open-circuit peak output voltage of 6KV with an internal resistance of 40Ω.

Working temperature: -40°C to +85°C.

The device has passed the 100% burn-in testing.


● Serial Interface


  EIA/TIA-485 RS-485 (ISO/IEC8284)

Serial Port Interface:

  RS-485 – A+, B-, GND

  Physical Interface: 5-core 3.81mm pitch screw terminal


● USB 2.0 Interface

Standard: USB 2.0

High-Speed: High-speed (25Mbps to 480Mbps)

Physical Interface: USB TYPE A male connector


● Environmental Index

Operating Temperature: -40°C to +85°C

Storage Temperature: -40°C to +85°C

Operating Humidity: 0% to 95% (non-condensing)

MTBF: >100,000 hours


Product Model FC-2005
Function Description Lightning-proof USB to 2-channel high-speed RS485 converter
Port Description 1 USB 2.0 interface; 2 RS485 interfaces
Power Supply Passive, USB-powered, power consumption <150mW (5V 30mA)
Dimensions 70mm (length) x 26mm (width) x 14mm (height)
Weight 0.016kg/pcs


application of usb 485


Leave a Message

If you are interested in any product, please contact us. We will introduce our products to you in more detail