> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# M-DUINO PLC Arduino Ethernet 19R I/Os (Relay Output)

**Type:** Product page · **SKU:** DFR0905 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/m-duino-plc-arduino-ethernet-19r-i-os-relay-output.html ([markdown](https://core-electronics.com.au/m-duino-plc-arduino-ethernet-19r-i-os-relay-output.html.md))

This is the first PLC equipment based on the Arduino Technology designed for a professional use. Taking Arduino Mega2560 as its core control chip, the...

## Pricing

- **Price:** $629.95 (inc GST) — $572.68 AUD, exc GST
- **Quantity discounts:** 6+ $544.05 (exc GST) · 12+ $521.14 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 31 and Sep 02.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=DFR0905:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/DFR0905:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

This is the first PLC equipment based on the Arduino Technology designed for professional use.

Taking Arduino Mega2560 as its core control chip, the M-Duino PLC has 17 I/Os, including 4 analog and digital inputs, 2 interrupt isolated inputs, 3 analog outputs, 8 digital isolated relay outputs, and 3 PWM digital isolated outputs. Meanwhile, it contains several communication ports like UART, I2C, SPI, RS232, RS485, Ethernet, which provide more flexibility to control your device. Besides, the controller offers the possibility to expand up to 127 modules via I2C.

This PLC can be programmed using the Arduino IDE and supports remote programming through the Ethernet port. Also, you can continuously monitor the status for all the variables, inputs, outputs, etc. It is compatible with the Ardbox, M-duino and the Touchberry Pi with an instantaneous connection.

**Board Overview**

![M-DUINO PLC Arduino Ethernet 19R I/Os (Relay Output)](https://dfimg.dfrobot.com/enshop/image/data/DFR0905/1_0x0.jpg.webp)

![M-DUINO PLC Arduino Ethernet 19R I/Os (Relay Output)](https://dfimg.dfrobot.com/enshop/image/data/DFR0905/2_0x0.jpg.webp)
![M-DUINO PLC Arduino Ethernet 19R I/Os (Relay Output)](https://dfimg.dfrobot.com/enshop/image/data/DFR0905/3_0x0.jpg.webp)

![M-DUINO PLC Arduino Ethernet 19R I/Os (Relay Output)](https://dfimg.dfrobot.com/enshop/image/data/DFR0905/4_0x0.jpg.webp)

### Features

With 17 I/O interfacesContains several communication portsSupports remote programming### Specification

- Mode Type: M-Duino
- Power Input Voltage: 12~24Vdc (Fuse Protection (2.5A) Polarity Protection)
- Input Rated Voltage: 24Vdc
- Rated Power: 30W
- Max Current: 1.5A
- Size: 101\*701\*119.5mm
- Clock Speed: 16MHz
- Flash Memory: 256kB of which 8kB for bootloader
- SRAM: 8KB
- EEPROM: 4KB
- Communication: I2C, Ethernet, USB, RS485, RS232, SPI | (2x) Rx, Tx (Arduino pins) Max232-Max485-W5500
- Operating Voltage Range: 11.4~25.4Vdc
- Operating Temperature: 0°C ~ 60°C
- Operating Humidity: 10%~90% (No Condensation)
- Operating Environment: No Corrosive Gas
- Storage Temperature: -20°C ~ 60°C
- Analog Input Voltage: 0 ~ 10Vac
- Digital Input Voltage: 7 ~ 24Vdc
- Interrupt Input Voltage: 7~24Vdc
- Expandability: I2C - 127 elements, serial port, RS485
- Analog Output Voltage (8bit): 0 ~ 10Vac
- Digital Isolated Output Relay Voltage: 220Vdc

### Parts List

M-DUINO PLC Arduino Ethernet 19R I/Os (Relay Output) x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/i/m/image_4014.jpg)