INTELLEGY HUB

xDIO-8 Industrial Impulse Relay

Impulse relay with Modbus RTU control, 8 relay outputs rated 250V 10A and 8 optocoupled discrete inputs.

RS-485 interface with galvanic isolation and port protection. AgSnO2 relay contacts. DC 12–48V supply. DIN-rail enclosure.

8 Relays 8 Inputs RS-485 12–48V DC
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Purpose

Purpose & Applications

The xDIO-8 controller is designed for switching on/off electrical equipment via relays with switching voltage up to 250V and current up to 10A per channel.

8×DO

Relay outputs · 250V 10A (AgSnO2)

8×DI

Optocoupled inputs · dry & wet contact

1200m

Max RS-485 bus distance

256 kbps

Max data exchange speed
Capabilities

Engineered for Industrial Reliability

Every component of the xDIO-8 is designed for continuous operation in building automation, lighting control and industrial load management environments.

8-Channel Impulse Relay

8 relay outputs with AgSnO2 contacts rated at 250V 10A. Each relay toggles its state when the corresponding input is activated — enabling push-button switching logic.

Galvanic Isolation & Port Protection

RS-485 port with galvanic isolation, static voltage protection up to 2.5 kV, power protection up to 300W, and self-restoring fuses. Optocoupled inputs with 5V pull-up.

DIN-Rail Modular Design

Compact 107×91×58mm enclosure with standard DIN-rail mounting. Designed for rapid cabinet installation alongside circuit breakers and power distribution equipment.

Modbus RTU over RS-485

Industrial RS-485 communication with Modbus RTU protocol. Configurable baud rates from 4800 to 256000 bps. Maximum bus distance of 1200 meters.

LED Status Indication

Comprehensive visual diagnostics: STE, TXD, RXD indicators plus individual LEDs for each of the 8 discrete outputs and 8 discrete inputs.

Pulse Counting & Metering

Digital inputs support pulse counting mode for connecting energy meters, water meters and gas meters with pulse output. Track consumption directly at the controller.

Process

How the xDIO-8 Works

From button press to load control — every step executes locally with deterministic timing. No cloud, no latency, no single point of failure.

01 — Impulse Capture

A momentary button press is captured by one of 8 optocoupled digital inputs (DI1–DI8). The input supports both dry and wet contact types with 5V pull-up.

02 — Firmware Logic Execution

The controller evaluates the impulse against the configured switching logic — toggle mode, interlock, or pulse counting for metering applications.

03 — Relay State Transition

The corresponding relay output (DO1–DO8) changes state. Each relay features AgSnO2 contacts rated at 250V 10A. Status LEDs provide real-time visual feedback.

04 — Bus Communication

The new relay state is reported over the RS-485 Modbus RTU bus at speeds up to 256000 bps across distances up to 1200 meters.

Live Demo

Interactive Smart Home Demo

Experience the xDIO-8 in action. This interactive simulation demonstrates impulse relay switching logic — click any wall switch to toggle lights and observe how digital inputs trigger relay outputs in real time.

Interactive relay simulation · Deterministic input→output logic · Click switches to control loads
Scenarios

How the xDIO-8 Is Used

A reliable solution for industrial or residential automation with Modbus RTU control. From smart homes to smart greenhouses — one device adapts to your needs.

Use Case 01 — Smart Home

Comfort and full control of lights and appliances

Control everything that can be turned on and off: from lighting to boilers, hoods and kettles.

Organization of push-button switches: pressing changes the relay state (modes: permanent and impulse).

Support for dry and wet contact sensors and switches.

Perfect solution for automating an apartment, house, or office.

Use Case 02 — Industrial Automation

Control of complex equipment

Industrial data transfer standard for stable operation in large facilities.

Stable control and communication at a maximum distance of up to 1200 meters.

Daisy-chain connection of multiple devices with addresses from 1 to 255 on a single RS485 bus.

Built-in contact debounce algorithm for accurate signal reading.

Use Case 03 — Smart Greenhouses

Climate system automation

Full microclimate control: lighting, heating, ventilation, and watering — all managed by a single device.

Automatic control of phyto-lighting by schedule or ambient light sensor.

Control of irrigation solenoid valves and pumps for automatic watering.

Control of extract fans and ventilation windows to maintain the optimal microclimate.

Technical Data

Technical Specifications

Complete electrical, communication and mechanical parameters for system integration and cabinet design.

Power & Electrical

  • Supply Voltage DC 12–48V
  • Min PSU Power 12W
  • Relay Outputs 8× (DO1–DO8)
  • Relay Rating 250V / 10A
  • Relay Contacts AgSnO2
  • Digital Inputs 8× (DI1–DI8)
  • Input Isolation Optocoupler + 5V pull-up
  • Input Type Dry & wet contact

Communication

  • Interface RS-485 (isolated)
  • Protocol Modbus RTU
  • Connectors Terminal blocks "A" & "B"
  • Max Distance 1200 meters
  • Baud Rates 4800–256000 bps
  • Port Protection Static up to 2.5 kV
  • Power Protection Up to 300W
  • Fuses Self-restoring

LED Indication

  • STE Device status
  • TXD Data transmit
  • RXD Data receive
  • DO 1–8 Discrete output state
  • DI 1–8 Discrete input state

Mechanical & Environmental

  • Dimensions (W×H×D) 107 × 91 × 58 mm
  • Mounting DIN-rail (35mm)
  • Housing Industrial plastic
  • Operating Temp −20°C to +70°C
  • Certification CE / EMC / RoHS
Advantages

Why Choose the xDIO-8

Drop-In Impulse Relay Replacement

The xDIO-8 replaces up to 8 traditional impulse relays in a single DIN-rail module — while adding Modbus RTU communication, diagnostic LED indication, pulse counting and programmable logic that legacy relays cannot provide.

Industrial-Grade Protection

Galvanic isolation on RS-485, static voltage protection up to 2.5 kV, power protection up to 300W with self-restoring fuses, and optocoupled inputs ensure reliable operation in electrically noisy industrial environments.

Versatile Input Modes

Digital inputs support both dry and wet contact types with 5V pull-up, impulse toggle switching mode for push-button control, and pulse counting for connecting energy, water and gas meters with pulse output.

Gallery

Product Gallery

The xDIO-8 combines industrial-grade relay hardware with intelligent control in a compact DIN-rail enclosure. 107×91×58mm form factor.

SUPPORT

Partner Program & Technical Support

Training & Certification Online and offline courses on the installation, configuration and integration of xDIO-8 into your projects.

Exclusive Resources Access to complete technical documentation, wiring diagrams, libraries, and code examples.

Technical Documentation Full set of datasheets, mounting instructions, and Modbus register maps for each device.

Technical Support Priority partner support: consultations, integration assistance, and fast tracking of issues.

Become a Partner →
Get Started

Ready to Upgrade Your Switching Infrastructure?

Contact our engineering team to discuss xDIO-8 integration, bulk pricing, OEM customization and technical documentation access.

Order xDIO-8 System +380 77 700 80 20