ArduinoPro Opta EXT A0602 [AFX00007] - Analog Expansion Module for Micro PLC | 6 Programmable Inputs, 2 Outputs, 4 PWM Channels | IoT & Automation Ready | Arduino Cloud & PLC IDE Compatible

I've worked with this expansion unit for several days now. It appears that everything but the status lights are working with the latest version of blueprint. This unit is the only way to get PWM output from the OPTA controller. It also makes analog input sensors easy to connect as it provides a balanced circuit for two or three wire probes. I cant stress enough that the OPTA line is its own ecosystem. So do your research before making a selection. These are not direct replacements for Arduino or ESP32. There is no logic level signaling, only industrial control level signaling.