IoTextra Octal - Isolated 4DI, 2DO, 2-Relay Control Module

The IoTextra Octal (Rev. 3.04) is a high-density, industrial-grade I/O module designed for flexible automation and IIoT applications. It combines four isolated digital inputs, two high-power NPN transistor outputs, and two mechanical relays in a compact 47x56mm form factor.

Whether you are building a smart factory node, a leak protection system, or a home automation controller, this module provides the safety of 3750Vrms isolation and the power to drive heavy loads.

Key Features

• 4 Isolated Digital Inputs: Supports up to 36VDC with transient protection.

• 2 High-Power NPN Outputs: Darlington transistors supporting up to 8A (16A peak) and 100VDC.

• 2 Reliable Relays: SPST (1 Form A) Panasonic or Hongfa relays (5A 250VAC/30VDC).

• Dual Control Modes: Use direct GPIO for speed or I2C (via onboard TCA9534) to save pins on your controller.

• Native Integration: Fully compatible with Tasmota, Node-RED, and IoTflow.

Technical Specifications

• Isolation: 3750 Vrms (individual for each channel).

• Power Dissipation: 20W (for transistors, with appropriate cooling).

• Connectors: Dual Qwiic (I2C) and HOST-P10/P12.

• Dimensions: 47 x 56 mm.

Shipping List

• 1 x IoTextra Octal Module (Rev. 3.04) (Note: 3.5mm pitch terminal blocks and mounting standoffs are sold separately.)