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  • A32 Pro ESP32 Ethernet RS485 4G Relay Module 32CH Relay 2CH Dimmer LCD MQTT HTTP TCP ESPhome Domotica Smart Home Automation
  • A32 Pro ESP32 Ethernet RS485 4G Relay Module 32CH Relay 2CH Dimmer LCD MQTT HTTP TCP ESPhome Domotica Smart Home Automation
  • A32 Pro ESP32 Ethernet RS485 4G Relay Module 32CH Relay 2CH Dimmer LCD MQTT HTTP TCP ESPhome Domotica Smart Home Automation
  • A32 Pro ESP32 Ethernet RS485 4G Relay Module 32CH Relay 2CH Dimmer LCD MQTT HTTP TCP ESPhome Domotica Smart Home Automation
  • A32 Pro ESP32 Ethernet RS485 4G Relay Module 32CH Relay 2CH Dimmer LCD MQTT HTTP TCP ESPhome Domotica Smart Home Automation
  • A32 Pro ESP32 Ethernet RS485 4G Relay Module 32CH Relay 2CH Dimmer LCD MQTT HTTP TCP ESPhome Domotica Smart Home Automation
A32 Pro ESP32 Ethernet RS485 4G Relay Module 32CH Relay 2CH Dimmer LCD MQTT HTTP TCP ESPhome Domotica Smart Home Automation
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A32 Pro ESP32 Ethernet RS485 4G Relay Module 32CH Relay 2CH Dimmer LCD MQTT HTTP TCP ESPhome Domotica Smart Home Automation

$370.00-$432.00/ Set|1 Set/Sets(Min. Order)

Customization:

Customized logo（Min.Order: 100 pieces）
Customized packaging（Min.Order: 100 pieces）
Graphic customization（Min.Order: 100 pieces）
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A32 Pro ESP32 Ethernet RS485 4G Relay Module 32CH Relay 2CH Dimmer LCD MQTT HTTP TCP ESPhome Domotica Smart Home Automation

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Multi-Channel Control: Equipped with 32-channel relay modules and 2-channel dimmer capabilities, enabling precise management of electrical devices, lighting systems, and IoT appliances.
  • Smart Connectivity: Supports MQTT, HTTP, TCP protocols, and integrates with ESPhome and Domotica platforms for seamless smart home automation via WiFi and Ethernet connectivity.

Key features

  • 1. Corrosion-Resistant Metal Construction

    • With a rugged aluminum/steel body and gold-plated SMA connectors, the A32 Pro ensures durable, long-lasting performance in harsh industrial or outdoor environments. Its matte finish and corrosion-resistant design outperform plastic-based competitors, maintaining reliability even in demanding conditions.

  • 2. Rotatable OLED Display with High-Resolution Interface

    • With a 1024x768 rotatable OLED display, you can easily configure settings and monitor operations from any angle. This intuitive design simplifies setup and control compared to fixed or lower-resolution displays found in standard relay modules.

  • 3. High-Capacity 32CH Relay & 2CH Dimmer

    • With 32 channels for precise device control and 2 dedicated dimmer channels, the A32 Pro handles complex automation setups ~50% more efficiently than 8-16CH modules*. Manage smart home appliances, lighting systems, and industrial equipment with unmatched scalability.

  • 4. Universal Connectivity for Diverse Applications

    • Designed for both home and commercial use, the A32 Pro supports WiFi, Ethernet, RS485, and 4G connectivity. This versatility enables seamless integration into smart homes for quick setup or continuous operation in industrial settings, unlike single-protocol devices.

  • 5. Certified for Safety and Compliance

    • Built to meet global standards like CE and FCC*, the A32 Pro ensures safe and reliable operation in regulated environments. Its certifications guarantee compatibility with IoT ecosystems and commercial-grade applications.

Product details

A32 Pro ESP32 Ethernet RS485 4G Relay Module 32CH Relay 2CH Dimmer LCD MQTT HTTP TCP ESPhome Domotica Smart Home Automation

The A32 Pro ESP32 Ethernet RS485 4G Relay Module is a rugged, multi-protocol smart home automation controller designed for universal applications. With 32 relay channels, 2 dimmer channels, and an OLED display, it supports MQTT, HTTP, TCP, and ESPhome protocols for seamless integration into IoT ecosystems. Its metal construction and modular design ensure durability, while gold-plated SMA connectors and Ethernet/4G capabilities enable reliable connectivity in industrial or commercial settings.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialAluminum/steel, matte finishRugged industrial environments
ConnectivitySMA (gold-plated), Ethernet, 4G, RS485High-reliability RF, wired, and cellular links
Display1024x768 OLED, rotatableClear visibility in smart home control panels
Relay Channels32CH (SPST)Large-scale device control (e.g., lighting, HVAC)
Dimmer Channels2CH (PWM)Adjustable lighting in smart homes/offices
ProtocolsMQTT, HTTP, TCP, ESPhomeCross-platform IoT automation
CertificationsCE, FCC, UL (compliant)Commercial and industrial safety standards
Power InputCN plug (100-240V)Global voltage compatibility

Customization guide

Adjustable parameters include:

  • Relay/dimmer channel count (expandable via modular design)
  • Mounting configuration (custom brackets for wall/industrial racks)
  • Protocol prioritization (e.g., 4G fallback for remote areas)
    With its modular build, users can tailor the A32 Pro to specific needs like industrial automation or high-channel home setups.

Get inspired

Control every aspect of your smart ecosystem with the A32 Pro. Its 32 relay channels manage lighting, security systems, and appliances, while the OLED display provides real-time feedback. With dual RS485/Ethernet interfaces, it’s ideal for both local and cloud-based automation projects.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Relay Channels16CH24CH32CH
Dimmer Channels1CH2CH2CH (PWM+DALI)
Protocols SupportedMQTT, HTTPMQTT, HTTP, TCPAll (MQTT/HTTP/TCP/ESPhome)
CertificationsCECE, FCCCE, FCC, UL
4G SupportOptionalStandardDual SIM, LTE-M/NB-IoT

Supplier's note

  1. Technical Breakthroughs:

    • 32CH Relays: Industry-leading capacity for managing complex home/industrial systems.
    • Dual Communication Protocols: Simultaneous MQTT and TCP support for hybrid IoT setups.
    • Rugged Design: Gold-plated SMA connectors and metal casing ensure durability in harsh environments.

  2. Optimal Version Selection:

    • Base Model: Ideal for small homes/offices needing basic automation (e.g., 16 devices + 1 dimmer).
    • Advanced Model: Targets medium-scale setups requiring 24 relays, 2 dimmers, and enterprise-grade certifications.
    • Pro Model: Best for large commercial projects (e.g., hotels, factories) needing 32 relays, dual 4G, and UL compliance.
      Example: The Pro’s 32CH relays enable control of 32 devices simultaneously, while its LTE-M/NB-IoT support ensures stable connectivity in remote areas. Pair this with the OLED display to monitor all systems in real time.

Frequently asked questions

  • Which smart relay module suits large homes or commercial spaces with multiple devices?

  • How do I maintain the SMA connectors on the A32 Pro for optimal signal transmission?

  • Why is metal construction better than plastic for industrial smart home modules?

  • Can the A32 Pro be customized for wall mounting or modular setups?

  • Is the A32 Pro certified for commercial smart home deployments?

  • Should I choose WiFi or Ethernet for industrial automation with the A32 Pro?

  • Does the A32 Pro support RS485 for legacy system integration?

  • How does the A32 Pro’s OLED display enhance smart home setup?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Smart PlugsBasic appliance controlWiFi connectivity (2.4GHz/5GHz), 1-3 channelsEasy installation, low cost.Limited scalability (▲▲▲ vs A32 Pro’s 32CH).
Smart ThermostatsHVAC automationTemperature sensors, compatibility with HVAC systemsEnergy savings via AI-driven adjustments.Requires professional installation; limited to climate control.
Smart Lighting ControllersHome ambiance automationRGBW support, dimming (0-100%), Zigbee/WiFi connectivityCustomizable lighting scenes (e.g., “Movie Mode”).Requires compatible bulbs (▲▲ vs A32 Pro’s universal relay support).
Security SystemsHome surveillanceMotion sensors, 1080p cameras, cloud storageReal-time alerts and 24/7 monitoring.Privacy concerns; higher upfront cost (▲▲▲ vs A32 Pro’s modular pricing).
Voice AssistantsHands-free controlVoice command integration (e.g., Alexa/Google Assistant)Hands-free operation for smart devices.Relies on internet connectivity; limited customization (▲ vs A32 Pro’s ESPhome).
Smart Relay Modules (A32 Pro)Industrial/home automation32 relay channels (supports 32 devices)▲▲▲, WiFi/4G connectivity▲▲▲,
MQTT/HTTP/TCP protocols (ISO/IEC 8802-3 certified)		Universal compatibility (works with any device), Scalable (up to 32CH),
4G backup for network reliability.		Steeper learning curve; requires technical setup (▲▲ vs plug-and-play devices).

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