Quantity   Component name
1 × ESP32-WROOM module
1 × LM2576-3.3 Power Management IC / Switching Regulator
1 × LM2576-5 Power Management IC / Switching Regulator
1 × W5500 Ethernet controller
2 × MCP23017 i2c 16bit I/O extension
16 × Low voltage reed relay 24V, 0.5A relays for the outputs