qReCon Relay HAT mounted on Raspberry Pi 5. Shows 4 relays and full setup.

qReCon: Configurable 4-Channel Relay HAT for Raspberry Pi IO Expansion

Name: qReCon 4-Channel Raspberry Pi Relay HAT
Brand: AQEX
Price: 19990 HUF
Availability: InStock

Reliable AC/DC switching capability for your Raspberry Pi. A professional 4-channel relay board engineered with industrial-grade components and optocoupler isolation for automation and smart home ecosystems.

Built for Developers & Industrial Systems - Developer-Centric Hardware (DCH).

Premium Relays: Genuine Schrack components for safe, long-lasting high-power switching.

Electrical Isolation: Optical isolation to safeguard logic circuits and your Raspberry Pi from power surges and noise.

Hardware-Deterministic: Physical DIP-switch for 2-mode GPIO pin selection and Active High / Active Low control.

Zero-Configuration Integration: Built-in Home Assistant Auto-MQTT Discovery for instant setup.

Learn About Our Approach

The Objective Behind qReCon

qReCon: Raspberry Pi Relay HAT - 4 relay, selectable GPIO & Active H/L

Driven by our Developer-Centric Hardware (DCH) philosophy, we set out to create a 4-channel relay module that puts electrical safety first and eliminates the compromises of cheap hobbyist boards.
Generic relay boards often lack proper optical isolation, force fixed GPIO routing, and complicate software integration. By combining genuine Schrack relays with complete optocoupler isolation, a DIP-switch selectable GPIO bank, and built-in Home Assistant Auto-MQTT Discovery, we created a truly robust control solution. Whether you are switching industrial loads or automating your smart home, you get a rock-solid, noise-immune relay HAT with zero code configuration.

Design Choices for qReCon

From Factor

For easy assembly, qUPS has HAT form factor. Simply connect it via the 40 pin header.

Stackability

Pins on the connector are long ones, all can be accessed from the top of the product.

Reliable connection

Massive, soldered pin header for power and signal connection. Pogo pins are not reliable.

Zero firmware

Everything is done by hardware.

GPIO communication

Easy programming. Avoid extra load on capacitance limited I2C bus. 4 GPIO ports for communication.

Optical isolation

Optically isolated channels safeguard your Raspberry Pi from electrical noise and damage.

Visual feedback

A dedicated LED shows the real-time ON/OFF status of each relay.

Versatile SPDT Relays

Each relay features both Normally Open (NO) and Normally Closed (NC) contacts, letting you choose how to control your circuits.

Configurable Control Logic

Easily switch between Active High and Active Low with a simple jumper setting.

Flexible GPIO Selection

Choose between two GPIO groups to best fit your project and avoid conflicts with other add-on boards.

Pin allocation of the qReCon

Bank 2
GPIOSEL=ON

Relay 4/06
Relay 3/13
Relay 2/19
Relay 1/26

Bank 1
GPIOSEL=OFF

Relay 4/05

Relay 3/16
Relay 2/20
Relay 1/21

qReCon User Interface and Indicators

Top-down view of qRecon Raspberry Pi HAT showing 4 relays, connectors & electronics.

Raspberry Pi 2x20 pin connector

Relay 1 & 2 output connector

Channel 1 LED

DIP Switch: setup GPIO ports, Active level (H/L)

Relay 3 & 4 output connector

Channel 2 LED

Channel 3 LED

Channel 4 LED

1 - Raspberry Pi 2x20 pin connector
2 - DIP Switch: setup GPIO ports, Active level (H/L)
3 - Relay 1 & 2 output connector
4 - Channel 1 LED
5 - Channel 2 LED
6 - Relay 3 & 4 output connector
7 - Channel 3 LED
8 - Channel 4 LED