






4-Channel 12V Relay Module with Optocoupler
- 4-channel independent relay control
- Operating voltage: 12V DC
- Switching capacity: 10A at 250V AC / 30V DC
- Integrated optocoupler isolation for safety
- Onboard LED status indicators for each channel
- Compatible with Arduino, Raspberry Pi, and PLCs
- Screw terminals for secure wiring
- Separate JD-VCC and VCC power options
- Compact design for easy integration
- Operating temperature range: -20°C to +70°C
Product Details
4-Channel 12V Relay Module with Optocoupler
The 4-Channel 12V Relay Module with Optocoupler is a high-performance switching solution designed to control high-voltage AC and DC loads using low-voltage signals from microcontrollers. Whether you are building a smart home system, industrial automation, or a robotics project, this module provides the reliability and safety required for professional-grade electronics.
Equipped with advanced optocoupler isolation, this board effectively protects your sensitive control circuitry from voltage spikes, noise, and interference. With a robust switching capacity of 10A at 250V AC or 30V DC, it is the ideal choice for switching lights, motors, fans, and other heavy-duty electrical appliances.
🔧 Key Features
- Optocoupler Isolation: Ensures safe and stable operation by isolating the control signal from the load.
- High Capacity: Supports up to 10A at 250V AC or 30V DC per channel.
- Status Monitoring: Onboard LED indicators provide real-time visual feedback for each relay channel.
- Versatile Compatibility: Works seamlessly with Arduino, Raspberry Pi, PLCs, and other microcontrollers.
- Flexible Power: Features separate JD-VCC and VCC pins for independent coil and logic power supply.
- Easy Connectivity: Equipped with high-quality screw terminals for convenient and secure wire connections.
💡 Applications & Use Cases
- Home automation systems (lighting, fan control).
- Industrial equipment and machinery control.
- Motor driver and actuator switching.
- Smart device prototyping and IoT projects.
- PLC-based automation systems.
⚙️ Technical Specifications
| Parameter | Value |
| Channels | 4 |
| Relay Type | JQC-3F-12VDC-C |
| Control Voltage | 12V DC |
| Trigger Current | 15–20mA per channel |
| Switching Capacity | 10A @ 250V AC / 10A @ 30V DC |
| Isolation | Optocoupler-based |
| Operating Temp | -20°C to +70°C |
| Dimensions | 75 × 55 × 18 mm |
| Weight | 65 g |
📦 Package Includes
- 1 × 4-Channel 12V Relay Module with Optocoupler
















