ESP32 WiFi Bluetooth BLE Relay Module – 1/2/8 Channel Dev Board

ESP32 WiFi & Bluetooth BLE Relay Module – 1, 2, or 8 Channel

Take full control of your smart home, automation projects, or IoT systems with the ESP32 WiFi Bluetooth BLE Relay Module. Available in 1, 2, or 8-channel configurations, this versatile development board combines the power of WiFi, Classic Bluetooth, and low-energy BLE — all in one compact, easy-to-program module. Whether you're a hobbyist, maker, or professional developer, this is the relay board built for real-world results.

Made in Mainland China.

Key Features

• Triple Wireless Connectivity: Integrated ESP32 chip supports WiFi, Classic Bluetooth, and BLE (Bluetooth Low Energy) — giving you maximum flexibility for any wireless project.
• 1, 2, or 8 Relay Channels: Choose the configuration that fits your application — from single-device switching to controlling up to 8 independent loads simultaneously.
• Remote Control via WiFi: Connect to your local network and control relay states from anywhere in the world via a smartphone app or custom interface.
• Low-Power BLE Support: Pair wirelessly with smartphones, tablets, or other BLE devices — ideal for battery-powered or energy-sensitive installations.
• Secure Communications: Built-in authentication and encryption mechanisms protect your data and give you peace of mind in sensitive deployments.
• Arduino IDE Compatible: Program and develop with ease using the Arduino IDE or your preferred ESP32-compatible development environment.
• Wide Compatibility: Works seamlessly with other ESP32 modules, sensors, expansion boards, and a wide range of IoT platforms.

Specifications

• Control Chip: ESP32 (integrated WiFi, Classic Bluetooth & BLE)
• Communication Modes: WiFi, Classic Bluetooth, BLE
• Development Environment: Arduino IDE & other ESP32-compatible platforms
• Condition: New
• Package Includes: 1× WiFi Bluetooth BLE Relay Module

What Can You Build With It?

This relay module is perfect for smart home automation, remote lighting control, garage door openers, industrial IoT systems, HVAC control, wireless sensor networks, and much more. Its broad voltage range and multi-channel options make it one of the most flexible ESP32 relay boards available for secondary and custom development.

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External Resources

For general guidance on electrical safety and relay-based systems, refer to the U.S. Consumer Product Safety Commission (CPSC) for product safety standards and best practices.

Note: Due to differences in monitor settings and lighting, the actual product color may vary slightly from images. Please allow ±1–2cm measuring deviation due to manual measurement.

Learn more: AVR microcontrollers

Frequently Asked Questions

Q: What communication modes does the ESP32 relay module support?

A: The ESP32 relay module supports three wireless communication modes: WiFi (for LAN and remote internet control), Classic Bluetooth, and BLE (Bluetooth Low Energy) for low-power connections with smartphones, tablets, and other BLE devices.

Q: Can I program this relay module with the Arduino IDE?

A: Yes! The ESP32 development board is fully compatible with the Arduino IDE. You can also use other ESP32-supported development environments and programming languages for custom firmware and secondary development.

Q: What is the difference between the 1-channel, 2-channel, and 8-channel versions?

A: The main differences are the number of independently switchable relay outputs and the physical board size. The 1-channel and 2-channel versions operate on DC 5–60V, while the 8-channel version operates on DC 5–30V. Choose based on how many devices or circuits you need to control simultaneously.

Q: Is the ESP32 BLE relay module secure for IoT applications?

A: Yes. The module includes built-in secure authentication and encryption mechanisms to protect communication and data, making it suitable for sensitive IoT and home automation deployments.