The 8-Channel ESP32 Relay Development Board is a professional-grade IoT solution that combines the dual-core power of the ESP32-WROOM-32E with eight high-quality relays. This board eliminates the “rat’s nest” of jumper wires usually found in DIY projects by integrating the microcontroller, power regulation, and relay switching onto a single, robust PCB. Whether you’re building a centralized smart-switch board or an industrial automation controller, this module provides the stability and connectivity you need.
Key Features
Integrated ESP32-WROOM: Features the powerful 240MHz dual-core processor with 4MB Flash, Wi-Fi, and Bluetooth (BLE).
High-Load Switching: Each of the 8 channels can handle up to 10A at 250V AC or 10A at 30V DC.
Firmware Ready: 100% compatible with Tasmota, ESPHome, and WLED, as well as custom Arduino IDE or MicroPython scripts.
Professional Input Options: Most models support wide-range DC input (5V to 24V), making it compatible with standard industrial power supplies.
Onboard Programming Port: Includes a dedicated header for easy flashing without needing to desolder the chip.
Technical Specifications
Feature
Specification
Microcontroller
ESP32-WROOM-32E
Relay Channels
8
Switching Capacity
10A 250VAC / 10A 30VDC
Input Voltage
DC 5V / 12V / 24V (depending on specific model variant)
Connectivity
2.4 GHz Wi-Fi + Bluetooth 4.2
Indicators
Power LED + Relay Status LEDs for each channel
Safety
Optocoupler isolation to protect the ESP32 from high-voltage spikes
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