About this item

🔌 ESP32 2-Channel Relay Module

🌐 Wi-Fi & BLE Smart Relay Controller

The ESP32 2-Channel Relay Module integrates a powerful ESP32 microcontroller with two high-current relays, enabling wireless control of electrical devices via Wi-Fi or Bluetooth Low Energy. Designed for automation, smart homes, and IoT applications.

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🛡️ Built-In Protections

• 🔥 Overheat Protection (via ESP32's internal sensors)
• ⚡ Relay Isolation for high-voltage safety
• 🔌 Opto-isolated trigger inputs for noise immunity

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📦 Compact & Integrated Design

This all-in-one module offers a seamless interface for both logic-level control and high-voltage switching. It operates directly on USB power or external 5V DC, simplifying integration into any smart system.

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🛠️ Applications

• 🏠 Smart home automation
• 📱 Remote appliance control
• 🕹️ IoT and DIY automation projects
• 💡 Smart lighting and power scheduling
• 🔌 Wireless switching via web or app interface

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⚠️ Notes

• ✅ GPIOs used for relay control are typically GPIO 26 & GPIO 27
• ⚙️ Firmware like Tasmota, ESPHome, or custom Arduino code is compatible
• 🔧 Ensure relays are rated for your load (typically 10A at 250VAC)

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✨ Key Features

• 📶 ESP32 Wi-Fi + BLE SoC
• 🔁 2x Relay channels, opto-isolated
• ⚡ Relay rating: 10A at 250VAC / 30VDC
• 🔌 Supply voltage: 5V via USB or external power
• 🧠 Programmable via Arduino IDE, ESP-IDF, etc.

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🔗 Useful Links

• 📘 ESP32 Datasheet
• 🔧 Tasmota Firmware
• 🔨 ESPHome Docs
• 🛠️ Arduino IDE Setup for ESP32