1 Channel 12V Relay Module with Optocoupler

The 1 Channel 12V Relay Module with Optocoupler is an isolated switching module designed for controlling high-voltage or high-current devices using low-voltage microcontroller signals. It features a 12V electromagnetic relay, transistor driver circuit, flyback protection diode, and optocoupler isolation for improved safety and signal protection. The module is suitable for Arduino, ESP32, Raspberry Pi, PLC, and other embedded control applications.

Technical Specifications:

• Module Type: 1-Channel Relay Module
• Relay Coil Voltage: 12V DC
• Relay Model: JQC-3FF-S-Z / Equivalent
• Trigger Voltage: 3.3V – 5V Logic Compatible
• Control Signal Type: Digital Input
• Optocoupler Isolation: Yes
• Maximum Switching Voltage:
  • 250V AC
  • 30V DC
• Maximum Switching Current:
  • 10A @ 250V AC
  • 10A @ 30V DC

Features:

• 12V relay for high-power load switching
• Built-in optocoupler isolation for signal protection
• Supports AC and DC load control
• High-current relay contacts up to 10A
• Compatible with 3.3V and 5V control logic
• LED indicators for power and relay status
• Integrated transistor driver circuit
• Easy screw-terminal connections
• Compact and durable PCB design
• Suitable for microcontroller and PLC interfacing

Applications:

• Home automation systems
• Industrial control systems
• Arduino and ESP32 projects
• Smart switching applications
• Remote appliance control
• Motor and pump control
• Lighting automation
• Security and alarm systems
• IoT automation projects
• AC/DC load switching circuits