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

Works flawlessly and as intended

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.

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.

Received, substituted for an existing other brand (working so I had inverter monitoring software setup ok) drivers loaded automagically and a change to the com port and still humming along 24/7. Nice having the switchable 120 Ohm resistor as I had to add it to the cheaper previous unit. This is as RS-485, I have no current need for RS-232 function atm but at this price I can use it for double duty if I want to.