IoTextra Input - 8-channel digital input module

The IoTextra Input (Rev. 3.02) is an industrial-grade, 8-channel digital input module designed for robust signal monitoring in automation and IIoT ecosystems. Featuring individual galvanic isolation for every channel, it ensures superior protection for your controller against high-voltage surges and ground loops in demanding environments.

Whether you are monitoring field sensors, industrial limit switches, or home automation states, this module provides the safety of 3750Vrms isolation and the flexibility of multiple interface modes.

Key Features

• 8 Isolated Digital Inputs: Supports up to 36VDC with individual galvanic isolation and TVS protection on every channel.
• Dual Operating Modes: Read states directly via GPIO (HOST-P connector) for high-speed response or via I2C (onboard TCA9534) to conserve pins.
• Flexible Polarity: Supports both bipolar (default) and unipolar input signals via configurable solder jumpers on the bottom side.
• Visual Diagnostics: Onboard LED indicators provide immediate status for each of the 8 digital input channels.
• Daisy-Chain Ready: Dual Qwiic connectors allow for easy integration into I2C sensor networks.
• Native Integration: Fully compatible with Tasmota, Node-RED, Blynk, and IoTflow.

Technical Specifications

• Input Voltage: Up to 36VDC (Logic "1": 0-2V; Logic "0": 4-36V).
• Isolation: 3750 Vrms dielectric strength per channel.
• Power Supply: 5VDC (onboard 3.3V regulator for logic section).
• Interfaces: HOST-P12/P10 connector, Dual Qwiic (I2C).
• I2C Addressing: Configurable via DIP switch (supports up to 16 modules on one bus).
• Dimensions: 47 x 56 mm.

Software Support

The IoTextra Input module is part of the Make Things Happy ecosystem and offers native support for:

• IoTflow and Node-RED
• Tasmota and Blynk

Compatible Ecosystem

This module is designed to work seamlessly with:

• Microcontrollers: IoTsmart ESP32-S3, IoTsmart RP2350.
• Base Modules: IoTbase PICO, IoTbase Nano.

Shipping List

• 1 x IoTextra Input Module (Rev. 3.02)
• (Note: 3.5mm pitch terminal blocks and mounting standoffs are sold separately).