The Flexy FLA3301 expansion card provides a flexy basic module with 2 additional RS232 / 485 ports that can be used to adjust the Flexy even more to your specific needs.
The Flexy 202 with VPN router, 1 x RS232 / 485 port, 2 DI, 1 DO and SD card, is a basic model of the modular Flexy data logger series. Due to the combination of expansion cards, the functionality can be perfectly adapted to the needs.