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
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:
- GPIO Mode: Relay state control is managed using the AP0-AP3 signals on the HOST-P connector.
- 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)
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Power On / Off Switching
