The IoTextra Combo module combines 2 analog differential inputs (via ADS1115, 16-bit) and 2 SPDT relay outputs on a single board. Input via GPIO or I2C (via Qwiic connectors). Compatible with Raspberry, Arduino, Adafruit, XIAO, Teensy, Particle and other platforms. Can be used with IoTsmart or IoTbase modules. Open Source Hardware, Raspberry PICO, ESP32-S3, MicroPython, CircuitPython, Tasmota, Node-RED, Blynk, IoTflow, IoT, IIoT, Industry 4.0, embedded, Automation, Smart Home
The IoTextra Combo module combines 2 analog differential inputs (via ADS1115, 16-bit) and 2 SPDT relay outputs on a single board. Input via GPIO or I2C (via Qwiic connectors). Compatible with Raspberry, Arduino, Adafruit, XIAO, Teensy, Particle and other platforms. Can be used with IoTsmart or IoTbase modules. Open Source Hardware, Raspberry PICO, ESP32-S3, MicroPython, CircuitPython, Tasmota, Node-RED, Blynk, IoTflow, IoT, IIoT, Industry 4.0, embedded, Automation, Smart Home
The IoTextra Combo module combines 2 analog differential inputs (via ADS1115, 16-bit) and 2 SPDT relay outputs on a single board. Input via GPIO or I2C (via Qwiic connectors). Compatible with Raspberry, Arduino, Adafruit, XIAO, Teensy, Particle and other platforms. Can be used with IoTsmart or IoTbase modules. Open Source Hardware, Raspberry PICO, ESP32-S3, MicroPython, CircuitPython, Tasmota, Node-RED, Blynk, IoTflow, IoT, IIoT, Industry 4.0, embedded, Automation, Smart Home
The IoTextra Combo module combines 2 analog differential inputs (via ADS1115, 16-bit) and 2 SPDT relay outputs on a single board. Input via GPIO or I2C (via Qwiic connectors). Compatible with Raspberry, Arduino, Adafruit, XIAO, Teensy, Particle and other platforms. Can be used with IoTsmart or IoTbase modules. Open Source Hardware, Raspberry PICO, ESP32-S3, MicroPython, CircuitPython, Tasmota, Node-RED, Blynk, IoTflow, IoT, IIoT, Industry 4.0, embedded, Automation, Smart Home
The IoTextra Combo module combines 2 analog differential inputs (via ADS1115, 16-bit) and 2 SPDT relay outputs on a single board. Input via GPIO or I2C (via Qwiic connectors). Compatible with Raspberry, Arduino, Adafruit, XIAO, Teensy, Particle and other platforms. Can be used with IoTsmart or IoTbase modules. Open Source Hardware, Raspberry PICO, ESP32-S3, MicroPython, CircuitPython, Tasmota, Node-RED, Blynk, IoTflow, IoT, IIoT, Industry 4.0, embedded, Automation, Smart Home
The IoTextra Combo module combines 2 analog differential inputs (via ADS1115, 16-bit) and 2 SPDT relay outputs on a single board. Input via GPIO or I2C (via Qwiic connectors). Compatible with Raspberry, Arduino, Adafruit, XIAO, Teensy, Particle and other platforms. Can be used with IoTsmart or IoTbase modules. Open Source Hardware, Raspberry PICO, ESP32-S3, MicroPython, CircuitPython, Tasmota, Node-RED, Blynk, IoTflow, IoT, IIoT, Industry 4.0, embedded, Automation, Smart Home
The IoTextra Combo module combines 2 analog differential inputs (via ADS1115, 16-bit) and 2 SPDT relay outputs on a single board. Input via GPIO or I2C (via Qwiic connectors). Compatible with Raspberry, Arduino, Adafruit, XIAO, Teensy, Particle and other platforms. Can be used with IoTsmart or IoTbase modules. Open Source Hardware, Raspberry PICO, ESP32-S3, MicroPython, CircuitPython, Tasmota, Node-RED, Blynk, IoTflow, IoT, IIoT, Industry 4.0, embedded, Automation, Smart Home
The IoTextra Combo module combines 2 analog differential inputs (via ADS1115, 16-bit) and 2 SPDT relay outputs on a single board. Input via GPIO or I2C (via Qwiic connectors). Compatible with Raspberry, Arduino, Adafruit, XIAO, Teensy, Particle and other platforms. Can be used with IoTsmart or IoTbase modules. Open Source Hardware, Raspberry PICO, ESP32-S3, MicroPython, CircuitPython, Tasmota, Node-RED, Blynk, IoTflow, IoT, IIoT, Industry 4.0, embedded, Automation, Smart Home
The IoTextra Combo module combines 2 analog differential inputs (via ADS1115, 16-bit) and 2 SPDT relay outputs on a single board. Input via GPIO or I2C (via Qwiic connectors). Compatible with Raspberry, Arduino, Adafruit, XIAO, Teensy, Particle and other platforms. Can be used with IoTsmart or IoTbase modules. Open Source Hardware, Raspberry PICO, ESP32-S3, MicroPython, CircuitPython, Tasmota, Node-RED, Blynk, IoTflow, IoT, IIoT, Industry 4.0, embedded, Automation, Smart Home
The IoTextra Combo module combines 2 analog differential inputs (via ADS1115, 16-bit) and 2 SPDT relay outputs on a single board. Input via GPIO or I2C (via Qwiic connectors). Compatible with Raspberry, Arduino, Adafruit, XIAO, Teensy, Particle and other platforms. Can be used with IoTsmart or IoTbase modules. Open Source Hardware, Raspberry PICO, ESP32-S3, MicroPython, CircuitPython, Tasmota, Node-RED, Blynk, IoTflow, IoT, IIoT, Industry 4.0, embedded, Automation, Smart Home
The IoTextra Combo module combines 2 analog differential inputs (via ADS1115, 16-bit) and 2 SPDT relay outputs on a single board. Input via GPIO or I2C (via Qwiic connectors). Compatible with Raspberry, Arduino, Adafruit, XIAO, Teensy, Particle and other platforms. Can be used with IoTsmart or IoTbase modules. Open Source Hardware, Raspberry PICO, ESP32-S3, MicroPython, CircuitPython, Tasmota, Node-RED, Blynk, IoTflow, IoT, IIoT, Industry 4.0, embedded, Automation, Smart Home
The IoTextra Combo module combines 2 analog differential inputs (via ADS1115, 16-bit) and 2 SPDT relay outputs on a single board. Input via GPIO or I2C (via Qwiic connectors). Compatible with Raspberry, Arduino, Adafruit, XIAO, Teensy, Particle and other platforms. Can be used with IoTsmart or IoTbase modules. Open Source Hardware, Raspberry PICO, ESP32-S3, MicroPython, CircuitPython, Tasmota, Node-RED, Blynk, IoTflow, IoT, IIoT, Industry 4.0, embedded, Automation, Smart Home
The IoTextra Combo module combines 2 analog differential inputs (via ADS1115, 16-bit) and 2 SPDT relay outputs on a single board. Input via GPIO or I2C (via Qwiic connectors). Compatible with Raspberry, Arduino, Adafruit, XIAO, Teensy, Particle and other platforms. Can be used with IoTsmart or IoTbase modules. Open Source Hardware, Raspberry PICO, ESP32-S3, MicroPython, CircuitPython, Tasmota, Node-RED, Blynk, IoTflow, IoT, IIoT, Industry 4.0, embedded, Automation, Smart Home
The IoTextra Combo module combines 2 analog differential inputs (via ADS1115, 16-bit) and 2 SPDT relay outputs on a single board. Input via GPIO or I2C (via Qwiic connectors). Compatible with Raspberry, Arduino, Adafruit, XIAO, Teensy, Particle and other platforms. Can be used with IoTsmart or IoTbase modules. Open Source Hardware, Raspberry PICO, ESP32-S3, MicroPython, CircuitPython, Tasmota, Node-RED, Blynk, IoTflow, IoT, IIoT, Industry 4.0, embedded, Automation, Smart Home
The IoTextra Combo module combines 2 analog differential inputs (via ADS1115, 16-bit) and 2 SPDT relay outputs on a single board. Input via GPIO or I2C (via Qwiic connectors). Compatible with Raspberry, Arduino, Adafruit, XIAO, Teensy, Particle and other platforms. Can be used with IoTsmart or IoTbase modules. Open Source Hardware, Raspberry PICO, ESP32-S3, MicroPython, CircuitPython, Tasmota, Node-RED, Blynk, IoTflow, IoT, IIoT, Industry 4.0, embedded, Automation, Smart Home
The IoTextra Combo module combines 2 analog differential inputs (via ADS1115, 16-bit) and 2 SPDT relay outputs on a single board. Input via GPIO or I2C (via Qwiic connectors). Compatible with Raspberry, Arduino, Adafruit, XIAO, Teensy, Particle and other platforms. Can be used with IoTsmart or IoTbase modules. Open Source Hardware, Raspberry PICO, ESP32-S3, MicroPython, CircuitPython, Tasmota, Node-RED, Blynk, IoTflow, IoT, IIoT, Industry 4.0, embedded, Automation, Smart Home
The IoTextra Combo module combines 2 analog differential inputs (via ADS1115, 16-bit) and 2 SPDT relay outputs on a single board. Input via GPIO or I2C (via Qwiic connectors). Compatible with Raspberry, Arduino, Adafruit, XIAO, Teensy, Particle and other platforms. Can be used with IoTsmart or IoTbase modules. Open Source Hardware, Raspberry PICO, ESP32-S3, MicroPython, CircuitPython, Tasmota, Node-RED, Blynk, IoTflow, IoT, IIoT, Industry 4.0, embedded, Automation, Smart Home
The IoTextra Combo module combines 2 analog differential inputs (via ADS1115, 16-bit) and 2 SPDT relay outputs on a single board. Input via GPIO or I2C (via Qwiic connectors). Compatible with Raspberry, Arduino, Adafruit, XIAO, Teensy, Particle and other platforms. Can be used with IoTsmart or IoTbase modules. Open Source Hardware, Raspberry PICO, ESP32-S3, MicroPython, CircuitPython, Tasmota, Node-RED, Blynk, IoTflow, IoT, IIoT, Industry 4.0, embedded, Automation, Smart Home
The IoTextra Combo module combines 2 analog differential inputs (via ADS1115, 16-bit) and 2 SPDT relay outputs on a single board. Input via GPIO or I2C (via Qwiic connectors). Compatible with Raspberry, Arduino, Adafruit, XIAO, Teensy, Particle and other platforms. Can be used with IoTsmart or IoTbase modules. Open Source Hardware, Raspberry PICO, ESP32-S3, MicroPython, CircuitPython, Tasmota, Node-RED, Blynk, IoTflow, IoT, IIoT, Industry 4.0, embedded, Automation, Smart Home
The IoTextra Combo module combines 2 analog differential inputs (via ADS1115, 16-bit) and 2 SPDT relay outputs on a single board. Input via GPIO or I2C (via Qwiic connectors). Compatible with Raspberry, Arduino, Adafruit, XIAO, Teensy, Particle and other platforms. Can be used with IoTsmart or IoTbase modules. Open Source Hardware, Raspberry PICO, ESP32-S3, MicroPython, CircuitPython, Tasmota, Node-RED, Blynk, IoTflow, IoT, IIoT, Industry 4.0, embedded, Automation, Smart Home
The IoTextra Combo module combines 2 analog differential inputs (via ADS1115, 16-bit) and 2 SPDT relay outputs on a single board. Input via GPIO or I2C (via Qwiic connectors). Compatible with Raspberry, Arduino, Adafruit, XIAO, Teensy, Particle and other platforms. Can be used with IoTsmart or IoTbase modules. Open Source Hardware, Raspberry PICO, ESP32-S3, MicroPython, CircuitPython, Tasmota, Node-RED, Blynk, IoTflow, IoT, IIoT, Industry 4.0, embedded, Automation, Smart Home
The IoTextra Combo module combines 2 analog differential inputs (via ADS1115, 16-bit) and 2 SPDT relay outputs on a single board. Input via GPIO or I2C (via Qwiic connectors). Compatible with Raspberry, Arduino, Adafruit, XIAO, Teensy, Particle and other platforms. Can be used with IoTsmart or IoTbase modules. Open Source Hardware, Raspberry PICO, ESP32-S3, MicroPython, CircuitPython, Tasmota, Node-RED, Blynk, IoTflow, IoT, IIoT, Industry 4.0, embedded, Automation, Smart Home
The IoTextra Combo module combines 2 analog differential inputs (via ADS1115, 16-bit) and 2 SPDT relay outputs on a single board. Input via GPIO or I2C (via Qwiic connectors). Compatible with Raspberry, Arduino, Adafruit, XIAO, Teensy, Particle and other platforms. Can be used with IoTsmart or IoTbase modules. Open Source Hardware, Raspberry PICO, ESP32-S3, MicroPython, CircuitPython, Tasmota, Node-RED, Blynk, IoTflow, IoT, IIoT, Industry 4.0, embedded, Automation, Smart Home
The IoTextra Combo module combines 2 analog differential inputs (via ADS1115, 16-bit) and 2 SPDT relay outputs on a single board. Input via GPIO or I2C (via Qwiic connectors). Compatible with Raspberry, Arduino, Adafruit, XIAO, Teensy, Particle and other platforms. Can be used with IoTsmart or IoTbase modules. Open Source Hardware, Raspberry PICO, ESP32-S3, MicroPython, CircuitPython, Tasmota, Node-RED, Blynk, IoTflow, IoT, IIoT, Industry 4.0, embedded, Automation, Smart Home
The IoTextra Combo module combines 2 analog differential inputs (via ADS1115, 16-bit) and 2 SPDT relay outputs on a single board. Input via GPIO or I2C (via Qwiic connectors). Compatible with Raspberry, Arduino, Adafruit, XIAO, Teensy, Particle and other platforms. Can be used with IoTsmart or IoTbase modules. Open Source Hardware, Raspberry PICO, ESP32-S3, MicroPython, CircuitPython, Tasmota, Node-RED, Blynk, IoTflow, IoT, IIoT, Industry 4.0, embedded, Automation, Smart Home
The IoTextra Combo module combines 2 analog differential inputs (via ADS1115, 16-bit) and 2 SPDT relay outputs on a single board. Input via GPIO or I2C (via Qwiic connectors). Compatible with Raspberry, Arduino, Adafruit, XIAO, Teensy, Particle and other platforms. Can be used with IoTsmart or IoTbase modules. Open Source Hardware, Raspberry PICO, ESP32-S3, MicroPython, CircuitPython, Tasmota, Node-RED, Blynk, IoTflow, IoT, IIoT, Industry 4.0, embedded, Automation, Smart Home

IoTextra Combo: 2-Channel Precision Analog Input & 2-Channel Relay

$24.50
$24.50
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Details
  • SKU: 040601304812
  • Type: Combo IO
  • Availability: In Stock

DESCRIPTION

Precision Measurement & Power Control

The IoTAextra Combo is a high-performance multi-functional module designed to streamline your automation projects. By integrating two 10A power relays and two 16-bit precision differential analog inputs onto a single board, it eliminates the need for multiple modules, reducing wiring complexity and saving valuable space in your enclosure.

Built with industrial-grade reliability, the IoTextra Combo features a high-resolution ADS1115 ADC and robust galvanic isolation, making it the perfect bridge between your digital logic and the high-voltage loads.

Technical Analog Circuit Design

  • Reference Foundation (Common for Lite & STD): Both versions are equipped with the REF3425 precision voltage reference and TLV333 zero-drift operational amplifiers.
  • Dual Active Filtering: The signal is filtered at both the Op-Amp input and its output before reaching the ADC.
  • Differential Design: A fully differential signal path ensures maximum common-mode noise rejection.
  • Clean Power: The analog section is powered by a dedicated TPS62173 (+5V_AN) DC-DC converter, isolating measurements from digital noise.

Key Features and Benefits

Feature Benefit
Hybrid Switching & Sensing Control power loads and monitor high-precision sensors simultaneously with one module.
16-Bit High-Resolution ADC Captures minute signal changes with exceptional accuracy, perfect for critical data acquisition.
Dual 10A SPDT Relays Rugged mechanical relays capable of switching up to 250VAC/30VDC for pumps, motors, or lighting.
Differential Input Channels Two independent differential channels effectively suppress common-mode noise for clean, trustworthy sensor data.
Dual-Mode Control Flexible integration: use direct GPIO for speed or I²C for scalability (daisy-chain up to 16 modules).
Industrial Protection Includes reverse power supply polarity protection and TVS diodes for ESD protection.

Technical Specifications

  • Relays: 2× SPDT (1 Form C), 10A @ 250VAC / 30VDC.
  • ADC: 16-bit ADS1115 Delta-Sigma (Texas Instruments).
  • Analog Inputs: 2 differential channels (Voltage or Current).
  • Voltage Ranges: ±0.5V, ±5V, ±10V (and unipolar variants).
  • Current Ranges: 0–20mA, 4–20mA, ±20mA, 0–40mA.
  • Interface: I²C (Standard & Fast modes) + 2× Qwiic® connectors.
  • Power Supply: +5V DC (with reverse polarity protection).
  • Dimensions: 47 × 56 mm.

Primary Applications

  • Industrial Telemetry: Data collection from 4–20mA and 0–10V sensors in high EMI environments.
  • Compact PLC Systems: Build space-efficient industrial controllers with combined I/O.
  • Smart Agriculture: Precision monitoring of soil moisture, pH, and EC sensors with simultaneous pump control.
  • Energy Monitoring: Measuring currents and voltages in power monitoring systems.
  • Laboratory Automation: Use in test benches where long-term stability of readings is critical.
  • Automated Test Equipment: Create versatile test benches that require both signal measurement and load switching.

Ecosystem Compatibility

The IoTextra Combo is fully compatible with the IoTsmart series microcontrollers and IoTbase expansion boards. It offers seamless connectivity via Qwiic® cables or the 12-pin HOST connector, supporting platforms like Raspberry Pi, Arduino, ESP32, and STM32.

Note: Usage with IoTbase or horizontal-mounted IoTsmart versions (V-HOST connector) requires a Height Extender or a dedicated riser adapter.

Choose Your Precision Level

The difference between versions lies solely in the tolerance and stability of the passive components in the analog section.

Feature IoTextra Combo Lite IoTextra Combo STD
Resistors (Analog Path) Industrial (1%) Precision (0.1% Low-T.C.)
Filter Capacitors Industrial (Low-ESR) Precision (High Stability)
Voltage Reference REF3425 (VREF) REF3425 (VREF)
Operational Amplifier TLV333 (Zero-Drift) TLV333 (Zero-Drift)

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