10 I/Os PLCs with ESP32 Industrial Shields 10 I/Os PLCs with ESP32 operates from 12VDC to 24VDC input voltage range and offer 220VDC digital isolated output. These modules feature polarity protection, fuse protection, and does not support reverse polarity. Specifications include 30W rated power, 240MHz external and 8MHz internal clock speed, and 4MB external flash memory. The 10 I/Os ESP32 modules support RS485, Ethernet, Wi-Fi, and Bluetooth® communications. Other Features include instant connection and programming through USB, wireless connectivity, and flexible master or slave configuration. Typical applications include elevator control, alarms, product lines, full HVAC solutions, and much more.