Industrial Shields ESP32 Series PLC I/O Module, 12 → 24 V dc Supply, Relay Output, 30-Input, Analog, Digital

The Boot & Work Corp S.L internal chip I/O module having the micro USB type B port for programming is located at the right side of the PLC enclosure. It comes with an additional Wi-Fi antenna with SMA female connector (on the frontal top side) included on the PLC.

Combination of the cyclic scan and immediate refresh processing I/O control method
Programming language Arduino IDE
Immediate access to program with maintain and control