The 4 Channel Relay and 4 Channel Opto-Isolated Input Board for ESP32 38-Pin, 5V is a ready-to-use control and automation module designed for safe switching and isolated input monitoring with ESP32 development boards. Featuring four independent relay channels and four opto-isolated digital input channels, this board is ideal for home automation, industrial control, and DIY electronics projects requiring electrical isolation and reliable load control. Operating on a 5V DC supply, the board is compatible with 38-pin ESP32 modules and provides convenient GPIO pin headers for direct interfacing. Each relay and opto input channel can be controlled or monitored individually, allowing precise management of connected devices and sensors.

Features:

1. 4-channel relay output for independent load control
2. 4-channel opto-isolated digital input channels for safe signal detection
3. Compatible with 38-pin ESP32 development boards
4. 5V DC operating voltage
5. Supports AC and DC load switching (relay rating dependent)
6. Opto isolation for improved safety and noise immunity
7. Easy GPIO-based interfacing with ESP32
8. Compact and robust PCB design
9. Ideal for home automation, industrial control, and DIY electronics projects

Specifications:

• Module Type: 4-Channel Relay with 4-Channel Opto-Isolated Input Board for ESP32
• Number of Relay Channels: 4
• Number of Opto-Isolated Input Channels: 4
• Input Voltage: 5V DC
• Compatible Controller: 38-Pin ESP32
• Relay Type: Electromechanical Relay (onboard)
• Relay Control: ESP32 GPIO
• Load Type: AC / DC (relay rating dependent)
• Input Type: Opto-isolated digital inputs
• PCB Material: FR4
• Operating Temperature: –10°C to +60°C
• Relay AC Load: 10A @ 125V AC to 10A @ 250V AC
  
• Relay DC Load: 10A @ 28V DC to 12A @ 120V DC

Package Includes:

1 × 4 Channel Relay and 4 Channel Opto-Isolated Input Board for ESP32 (38-Pin, 5V)