DFRobot

10 I/Os Relay Module - CPU ESP32 (Relay Output)

Name: 10 I/Os Relay Module - CPU ESP32 (Relay Output)
Brand: DFRobot
SKU: DF-DFR0901
Price: 268.8 AUD
Availability: InStock

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The 10 I/Os Relay Module with ESP32 is an industrial PLC that combines the connectivity of the ESP32 (Wi-Fi, Bluetooth LE, Ethernet, RS485) with relay output...

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The 10 I/Os Relay Module with ESP32 is an industrial PLC that combines the connectivity of the ESP32 (Wi-Fi, Bluetooth LE, Ethernet, RS485) with relay outputs for switching higher-voltage loads. It provides a simple, cost-effective, and open-source approach to industrial monitoring and control with standardised PLC connectors.

Powered by 12–24V DC, the module features optoisolated digital inputs and relay outputs for switching AC and DC loads. The ESP32's dual-core 240MHz processor, 4MB Flash, 4MB SRAM, and 2MB PSRAM provide ample processing power, while Wi-Fi and BLE enable wireless monitoring and IoT integration.

Key Features

ESP32 MCU – Dual-core 240MHz with 4MB Flash, 4MB SRAM, and 2MB PSRAM
10 I/O Interfaces – Optoisolated digital inputs (0–3.3–24V DC at 10Hz) and relay outputs (5–24V DC)
Relay Outputs – Directly switch higher-voltage AC and DC loads
Wi-Fi & Bluetooth LE – Built-in wireless connectivity for IoT and remote monitoring
Standardised PLC Connectors – Industrial-grade connectors for reliable wiring
RS485 Communication – Modbus RTU support for industrial networking
Ethernet Port – TCP/IP and Modbus TCP connectivity
USB Programming – Program via Arduino IDE or ESP-IDF over USB
12–24V DC Power – Operating range 11.4–25.4V DC, rated power 30W, max current 1.5A

Specifications

Operating Temperature – 0°C to 60°C
Operating Humidity – 10%–90%
Storage Temperature – -20°C to 60°C

Ideal For

Industrial machine monitoring and control
AC and DC motor control
HVAC systems (fans, pumps, air conditioning)
Elevator control systems
IoT-connected industrial automation
Production line automation

Warning: This module can switch mains-voltage loads via relay outputs. Mains voltage wiring must be performed by a qualified electrician. Incorrect wiring can result in electric shock, fire, or equipment damage.

Package Contents

1× 10 I/Os Relay Module – CPU ESP32 (Relay Output)

Resources

Jargon buster

Plain-language definitions for the technical terms used above.

BLE: BLE stands for Bluetooth Low Energy, a Bluetooth mode designed for low power use and broad compatibility with modern phones and computers. It connects well to battery-powered and mobile devices, including Apple hardware, though it behaves differently from Bluetooth Classic and its serial-style profiles.
DC: DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
ESP-IDF: ESP-IDF is Espressif’s official software development framework for ESP32-family chips. It gives more direct control over the hardware than beginner-style environments, which can help with advanced features like Wi-Fi, Bluetooth, audio and power management.
ESP32: ESP32 is a family of low-cost microcontroller chips and modules from Espressif with built-in WiFi and Bluetooth. They support programmable firmware and over-the-air updates, and are commonly programmed with toolchains such as the Arduino core and ESP-IDF.
IDE: Short for Integrated Development Environment, a program used to write, run and manage code. It matters because some learners prefer a traditional coding workspace instead of a guided notebook-style lesson.
IoT: Short for Internet of Things, meaning physical devices that connect to networks or the internet to send data or be controlled remotely. It matters if you want projects such as connected sensors, remote controls or classroom data-logging activities.
Modbus RTU: Modbus RTU is a version of the Modbus protocol that runs over serial wiring, commonly RS485. When a product lists Modbus RTU, it can connect to industrial sensors, meters or drives that use serial Modbus rather than Ethernet.
Modbus TCP: Modbus TCP is a version of the Modbus protocol that runs over Ethernet networks. When a product lists Modbus TCP, it can connect to industrial systems that communicate over standard network cabling.
Relay module: A relay module uses an electrically controlled switch to let a low-power microcontroller control a separate circuit. It matters when switching devices that need different voltages or more current than a microcontroller pin can safely handle.
RS485: RS485 is a robust differential serial communication standard often used in factories, farms and buildings where cables may be long or electrically noisy, and it can link many devices on a single pair of wires. When a product lists RS485, it can communicate with industrial sensors, meters and control equipment over longer distances than typical hobby serial wiring.
SRAM: Fast temporary memory used by a processor while a program is running. More SRAM helps with projects that handle larger data buffers, networking, displays, or more complex code.