ESP32-S3 RS485 1CH

This versatile controller is powered by the ESP32-S3 MCU, offering high-performance processing and robust wireless connectivity for industrial IoT applications. The board features a dedicated RS-485 channel with Auto-Direction circuitry, protected by SMAJ transient voltage suppressors to ensure reliable data communication in noisy environments. Output is managed via a 5V Relay equipped with a flyback diode for inductive load protection, complemented by a digital input channel for real-time monitoring. Power is delivered through a modern USB Type-C interface or a 5V Vin terminal, regulated by a low-dropout ME6217 for stable system operation. Measuring just 82.5 x 31.5 mm, this compact design is ideal for smart monitoring, agricultural automation, and custom Modbus slave devices.