and that’s because both RS232 and RS485 are standards that come from EIA (Electronics Industries Alliance). It also might remind you of RS422, if you’ve ever seen this name mentioned online ...

[André Sarmento] needed to connect a computer to an RS-485 bus. A simple converter can be sourced online, but the only thing he could find locally that was even close was a USB to RS-232 converter.

The SmartID S10 reader. Transmit frequency 13.56 MHz. Can be mounted on a door mullion or single-gang electrical box. Secure data transmission with 3DES encryption. Reads any MIFARE/DESFire ...