ESP32 PLC Module (10 Opto-Isolated I/Os & RS485, Optoisolated Output)

MEPA CODE: 0123167173
BRAND: DFRobot
MANUFACTURER CODE: DFR0900
SKU CODE: DF-DFR0900
Availability: Unavailable Availability (legend)
334,60 (excl. VAT)
Full description
Introduction

10 I/Os PLC Module – CPU ESP32 (Optoisolated Output) delivers a compact industrial control solution designed for monitoring, automation, and machine integration tasks. Built around an ESP32 development platform, this industrial PLC controller combines wireless connectivity, Ethernet networking, and RS485 communication in a single open-source hardware design. The programmable automation unit integrates optoisolated digital outputs and standardized PLC terminals, enabling reliable signal handling in electrically noisy environments. Flexible connectivity and embedded computing capability make this industrial control board suitable for distributed automation systems, smart infrastructure monitoring, and modern IoT-enabled control installations.


Industrial PLC Architecture with ESP32 Processing

An embedded ESP32 devkit provides high-performance processing with up to 240 MHz clock speed and integrated WiFi and BLE connectivity. This industrial automation controller bridges traditional PLC environments with modern IoT platforms, supporting USB, Ethernet, and RS485 communication simultaneously. The open-source hardware architecture allows deep customization for automation engineers and system integrators. Combining wireless networking, TCP/IP capability, and Modbus protocol support enables seamless integration with supervisory control systems, cloud dashboards, and distributed industrial monitoring networks.


Optoisolated I/O for Reliable Industrial Operation

Optoisolated digital outputs and wide‑range digital inputs allow stable operation in industrial environments where electrical noise and voltage fluctuations are common. The programmable logic controller board supports 0–3.3–24 V digital inputs and 5–24 V isolated outputs, protecting internal circuitry while maintaining dependable signal control. This electrical isolation approach improves reliability when driving relays, motors, or field devices. Standardized PLC connectors further simplify field wiring, enabling clean installation within control cabinets, automation panels, and equipment control systems.


Flexible Communication Interfaces for Automation Systems

Multiple communication interfaces make this industrial monitoring module adaptable across a wide range of automation architectures. Native support for Ethernet networking, RS485 serial communication, and wireless connectivity allows connection to Modbus TCP or Modbus RTU networks. The programmable control unit integrates easily into building automation systems, machine control networks, and industrial IoT deployments. Such communication flexibility allows centralized monitoring, remote diagnostics, and data-driven industrial control without complex gateway hardware.


Application-Oriented Industrial Control Platform

This PLC-style automation board targets practical industrial control scenarios including machine monitoring, elevator control systems, HVAC infrastructure, and motor-driven equipment. The programmable industrial controller can supervise fans, pumps, air-conditioning systems, and automated production lines. Integrated networking and robust I/O design also support smart facility management and distributed industrial IoT deployments where reliable sensing, actuation, and remote connectivity are required.

Features
  • 10 digital I/O interfaces for industrial monitoring and control
  • Optoisolated output design improves electrical safety and signal reliability
  • Standardized PLC connectors for easy installation in control systems
  • Supports RS485 communication for industrial networking
  • Integrated Ethernet, WiFi, and BLE connectivity
  • Compatible with Modbus TCP and Modbus RTU industrial protocols
  • Specification
  • MCU: ESP32 devkit
  • Power Input: 12-24V DC
  • Input Rated Voltage: 24V DC
  • Rated Power: 30W
  • Max Current: 1.5
  • Clock Speed: External 240 MHz; Internal 8MHz
  • Flash: 4MB
  • SRAM: 4MB
  • PSRAM: 2MB
  • Communication: USB-RS485-ETH-WiFi-BLE
  • Operating Voltage Range: 11.4~25.4V DC
  • Power Consumption: 30V AC MAX
  • Digital Input: 0-3.3-24V DC(10Hz)
  • Digital Isolated Output: 5-24V DC
  • Operating Temperature: 0℃~60℃
  • Operating Humidity: 10%~90%
  • Storage Temperature: -20℃~60℃
  • Ethernet Port
  • RS485
  • TCP IP
  • Modbus TCP
  • Modbus RTU
  • Shipping List
  • 10 I/Os PLC Module - CPU ESP32 (Optoisolated Output) x1
  • Applications
  • Industrial machine monitoring and automation
  • Elevator and equipment control systems
  • HVAC systems including fans, pumps, and air conditioning
  • Industrial production line automation
  • Control of AC and DC motors