IoTextra Relay2 - 4-channel SPDT relay module

The IoTextra Relay2 module is equipped with four relays (Panasonic ALQ105, Omron G5Q-14, HF33F/005-ZS3, or TE PE014005).
The contact form is SPDT (1 Form C).

• Switching Voltage: 250 VAC, 30 VDC
• Contact Current Rating: 10A
  

Ecosystem & Integration

This module is a member of the loTextra series, which serves as a fundamental building block of our ecosystem and embodies the Make Things Happy Philosophy. It is engineered to bridge the gap between rapid prototyping and industrial-grade reliability.

Hardware Synergy: The module is compatible with both IoTsmart and IoTbase series.

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

Software Power: This hardware compatibility unlocks the full potential of the IoTflow platform. It enables you to:

• Create custom Node-RED nodes effortlessly.
• Integrate via MQTT with third-party global platforms like Blynk.
• Scale your project from a single node to a complex industrial network.

Safety and Isolation

The galvanic isolation is individual for each relay:

• The dielectric strength of the insulation is 4000Vrms (for one minute between the coil and the contacts).
• It is 750Vrms (for one minute between the opened contacts).
• Surge resistance between the coil and contacts is 8000V.

The module provides an indication of the relays' status.

Operational Modes

The IoTextra Relay2 module supports two operational modes:

1. GPIO Mode: Relay state control is managed using the AP0-AP3 signals on the HOST-P connector.
2. I²C Mode: Relay state control is managed via the serial I²C bus using an I/O expander (TCA9534 or compatible).

Scalability and Flexibility

• Up to 16 modules can be connected to a single I²C bus.
• It is also possible to use a hybrid control method: AP0-AP3 signals on the HOST-P connector can control some channels, while signals from the I/O expander control the rest.

Compatibility

Compatible with Raspberry Pi, Raspberry Pi Pico, Arduino Nano, Nucleo, Adafruit, Teensy, ESP32, SeeedStudio XIAO, and more.

Physical Specifications

• Module size: 47x56 mm.
• The module has mounting holes for installation in a base module or on a Raspberry Pi.

Primary Areas of Application

• Industrial Applications
• Field Devices and PLCs
• Smart Home
• Consumer Electronics
• Lighting
• DC Motor Control
• Heating, Ventilation & Air Conditioning (HVAC)
• Power On / Off Switching