






🔌 Connect Smarter, Control Faster — The Industrial USB RS485 Powerhouse
The CERRXIAN 1FT RS485 to USB Terminal Converter is a compact, industrial-grade cable that converts USB to RS485 with built-in 5V 200mA power output. Featuring a high-speed 115200 bps data rate and broad Windows OS compatibility, it’s designed for seamless integration with industrial control, automation, and monitoring equipment. Its plug-and-play design and robust CH340 chip make it a reliable choice for professionals demanding stable, fast, and power-efficient serial communication.
























| AC Adapter Current | 200 Milliamps |
| ASIN | B09JMT9D59 |
| Best Sellers Rank | #146 in Serial Adapters |
| Brand | CERRXIAN |
| Cable Type | USB |
| Compatible Devices | Modem |
| Connector Gender | Male-to-Male |
| Connector Type | USB Type A |
| Data Transfer Rate | 115200 Bits Per Second |
| Date First Available | October 17, 2021 |
| Indoor/Outdoor Usage | Indoor, Outdoor |
| Item Weight | 1.13 ounces |
| Item model number | 1FT |
| Manufacturer | Lemeng |
| Number of Items | 1 |
| Number of Pins | 4 |
| Package Dimensions | 6.1 x 3.23 x 0.55 inches |
| Recommended Uses For Product | Monitoring |
| Shape | Round |
| Special Feature | Tangle Free |
| Unit Count | 1.0 Count |
C**P
Worked great
Worked great. Used for JK BMS to Home assistant communication. Easy Install.
R**Y
Helped us connect to our lighting controllers.
We need these to connect programmers to our Pheonix lighting controllers. They work incredibly well for that purpose.
L**R
POLARITY WARNING A/B are not standard RS485
the product works fine. I added my device to the rs485 bus and without installing drivers, was able to read data from /dev/ttyUSB0 All is good, but look at the product specs.. it does not follow the RS485 convention of A- and B+ The labels are only A and B but in this case + is connected to A. I saw this in another review before I connected this to my 485 bus, but I'm adding this review to make sure it gets seen by others too.
E**O
Excelente calidad del producto asi como tiempo de entrega y precio tambien
A**R
Cool device that allows u to do/test or wire different items to USB power source
Good quality and easy to connect/use.
T**S
Works well for Modbus-RTU control.
I got this to add digital control for speed on a HuanYang VFD controller and Mach 3, it was easy peasy! Works well without a hiccup!
M**R
EIA/TIA RS-485 standard still not adhered to
OK, we know that the A+ and B- labeling on the prior revision of this product was incorrect and that the A and B should have been swapped to match the electrical designation standard from EIA/TIA RX-485. Did the manufacturer remove the A and B and just leave the correct + and - ? NO. They doubled down on st up id and removed the standard polarity designations and kept the wrong A and B labelling on the wrong pins! Darwin award winner!!!
M**E
A/B Labels Don't Follow Standard Convention
Underwhelmed with backwards terminal labels. Convention is that A is (-). Not on this device. Also changing port address seemed to require unplugging/re-plugging in converter. This could be a Windows issue but I'm not convinced. I'm usually a 5-star reviewer. This is functional but "meh".
E**.
Works good for Modbus with the (linux) Pi and Windows 11
M**N
Worked without having to mess around with downloading drivers.
W**Z
Works very well
Trustpilot
1 month ago
2 days ago