Waveshare USB to RS232/485 Serial Converter, Onboard Original FT232RNL Chip, Features More Stable Transmission, Suitable for Multiple Devices, Compatible with Mac/Linux/Android/Win11/10/8.1/8/7, etc

I purchased the Waveshare USB to RS232/485 serial adapter for integrating legacy industrial equipment with a modern system, and it has worked flawlessly. Build quality is excellent, with a solid enclosure and clearly labeled terminals that make wiring straightforward. The adapter was recognized immediately by my system with no driver headaches, and communication over both RS232 and RS485 has been stable and consistent. Data transmission is clean, with no dropouts or random disconnects, even during extended operation. It’s obvious this is designed with industrial and professional use in mind rather than being a cheap consumer adapter. I also appreciate the flexibility of having both RS232 and RS485 in a single unit, which saves space and eliminates the need for multiple converters. Overall, this is a dependable, well engineered product that does exactly what it claims. Highly recommended for anyone working with PLCs, CNC machines, industrial controls, or other serial communication applications.

I had several USB to serial adapters they no longer worked with Windows 10/11. Have this a try as I had a need to connect to an older RS-232 device. On my Win 10 laptop, it was plug and play. Worked with any applications I tried, even an old version of Procomm Plus. Windows 11 desktop needed a driver installed, quickly found on the website. It again works with every application I have tried. I like it so much, I am thinking of ordering a second one to keep in the laptop bag. I had several euro block 3 pin plugs in my parts box, so I made up a few different adapters (9 pin, 25 pin, and 1/8" plug) for quick connection. Well worth the price.

Works great. I was getting all data echoed back, but it turned out the device came with the switch in rs232 mode. Switching it to rs485 fixed the issue. It was a bit of a puzzle that a device sold as a usb to rs485 converter would be shipped with the switch in the rs232 mode.

Works perfect, exactly what I expected

Worked great on PC. Able to connect to golf cart.

I used this adapter in conjunction with a IoT project in working on that needed a RS232 interface to a Wi-Fi enabled serial device to transmit MQTT data. Worked great out of the box and was recognized by my Raspberry Pi 2W running Ubuntu. Price point seems reasonable for a trusted brand.

This worked great when others wouldn't for reading data from my renogy wanderer solar charger. Easy to use.

Good

Fonctionne très bien

I have ordered from Waveshare in the past and have been impressed enough with their consistent quality that I now refer to them in my regular list of Amazon sellers. This adapter allows me to integrate older equipment with technically obsolete interfaces. I can opt between RS232 and RS485 with a glide switch. No drivers are required; I used it with Windows 11 with no drivers though drivers are available from Waveshare. It's very easy and straight forward to use with a basic build and I like that a terminating resistor is onboard. All said and done this is a good adaptor for a fair price.

Works flawlessly and as intended

Werkt out of the box

The Waveshare is a USB to RS232 adapter with real 12V out / input. (Picture is the character f @9600 baud) I bought, plenty of adapters that used TTL output, or where not real rs232 adapters. The only downside of the Waveshare, it has only RX and TX. So no handshaking. But for my job this a good solution.