IoTextra Octal2 - Isolated 4DI+4DO (GPIO + I²C)

Name: IoTextra Octal2 - Isolated 4DI+4DO (GPIO + I²C)
SKU: 40378
Price: 18.00 USD
Availability: InStock

8-ch Digital IO (4-IN / 4-OUT) w/ 3750V isolation. 100V/8A outputs. Dual GPIO & I2C mode (16 modules). Compatible w/ IoTexra/IoTsmart

Designed by makethingshappy in Israel

IoTextra Octal2 - Isolated 4DI+4DO (GPIO + I²C) 1

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2025-10-25T12:58:38.560Z-01 - IoTextra Octal2 3D view.png

2025-10-25T12:58:38.560Z-03 - IoTextra Octal2 TOP view.png

2025-10-25T12:58:38.560Z-02 - IoTextra Octal2 with and without Qwiic connector.png

2025-10-25T12:58:38.560Z-05 - IoTextra Octal2 HOST connector_pinout.png

2025-10-25T12:58:38.560Z-06 - IoTsmart RP2040 and IoTextra Octal2.png

2025-10-25T12:58:38.560Z-07 - IoTsmart RP2350 and IoTextra Octal2.png

2025-10-25T12:58:38.560Z-08 - IoTsmart ESP-32-S3 and IoTextra Octal2.png

2025-10-25T12:58:38.560Z-09 - IoTsmart ESP-32-S3 and IoTextra Octal2.png

2025-10-25T12:58:38.560Z-10 - IoTsmart ESP-32-S3 and IoTextra Octal2.png

2025-10-25T12:58:38.560Z-11 - IoTsmart XIAO and IoTextra Octal2 - H1.png

2025-10-25T12:58:38.560Z-12 - IoTsmart XIAO and IoTextra Octal2.png

2025-10-25T12:58:38.560Z-13 - IoTbase PICO and Octal2 with ESP32S3-PICO.png

2025-10-25T12:58:38.560Z-14 - IoTbase NANO and IoTextra Octal2.png

2025-10-25T12:58:38.560Z-15- IoTextra Octal2 and Raspberry Pi Zero.png

2025-10-25T12:58:38.560Z-16 - IoTextra Octal2 and Feather Adaptor with Proton2.png

2025-10-25T12:58:38.560Z-04 - IoTextra Octal2 BOTTOM view .png

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Open Source PCB'S and software for IoT, IIoT and Home Automation

8-ch Digital IO (4-IN / 4-OUT) w/ 3750V isolation. 100V/8A outputs. Dual GPIO & I2C mode (16 modules). Compatible w/ IoTexra/IoTsmart

The IoTextra Octal2 (Rev. 3.02) module (SKU 040303302311) is an industrial automation solution providing a reliable and safe interface between your microcontroller and high-load or industrial systems…

Key Technical Features

8 Digital Channels: 4 isolated inputs and 4 powerful outputs.
Maximum Safety: Superior galvanic isolation of 3750 Vrms on all channels.
Wide Input Range: Digital inputs accept signals up to 36 VDC (compatible with the 24V industrial standard).
Powerful Outputs (NPN): Max 100 VDC, 8 A continuous (16 A peak), 20 W dissipation.
Control Modes (Dual Mode): Supports GPIO Mode, I²C Mode, and hybrid operation.
Scalability: Ability to connect up to 16 IoTextra Octal2** modules to a single I²C bus.
Controller Compatibility: Raspberry Pi, Pico, Arduino Nano, ESP32, Nucleo, Adafruit, Teensy, and others.

Software & Compatibility

IoTextra Octal2 is designed for seamless integration into modern IoT ecosystems.

Platform	Link
Node-RED	Node-RED (Official Site)
Blynk	Blynk (Official Site)
IoTflow	IoTflow (GitHub)

Operational Modes (Dual Mode Explained)

This full-featured version provides maximum flexibility:

GPIO Mode: Direct, high-speed control and state reading via the HOST-P connector pins.
I²C Mode: Control via the serial I²C bus, allowing up to 16 modules to be connected to a single host controller.
Hybrid Control: The option to use GPIO for some channels and I²C for others simultaneously.

Documentation & Resources

All technical details are available in our public repository.

Resource	Description	Link
Datasheet	Full technical specifications, electrical parameters
GitHub Repository	Schematics, code examples, and supplementary documents.	IoTextra Octal2 (GitHub)
Main Website	Other modules, the IoTflow platform	www.makethingshappy.io
SKU	Product Stock Keeping Unit.	040303302311