2-Channel 5V Relay Module with Optocoupler | 3.3V & 5V Compatible

About this item

⚡️ 2-Channel 5V Relay Module with Optocoupler | 3.3V & 5V Compatible

🔌 Dual-Channel High-Power Switching for Microcontrollers

The 2-Channel 5V Relay Module is a reliable solution for controlling high-voltage devices from low-voltage digital systems. Featuring optocoupler isolation, it safely interfaces with 3.3V and 5V microcontrollers such as Arduino, ESP32, and Raspberry Pi. Each relay can switch loads up to 250V AC or 30V DC.

🔍 Features

• ⚡️ 2 relays (normally open + normally closed terminals)
• 🔋 Control voltage: 3.3V to 5V logic level compatible
• 🔌 Relay rating: up to 10A @ 250V AC / 30V DC
• 🛡️ Optocoupler isolation for signal protection
• 💡 Onboard LED indicators for each relay status
• 📦 Includes screw terminals and header pins
• 🔧 Standard 2.54mm pitch for easy prototyping

🛠️ Applications

• 💡 Home automation — lights, fans, alarms
• ⚙️ Industrial control systems
• 🔌 Power switching for appliances or tools
• 🔒 Smart lock or access control systems
• 🔁 Timed or conditional relay control via microcontroller

⚠️ Notes

• ⚠️ Keep high-voltage and low-voltage sections isolated
• 🔧 Use flyback diodes if switching inductive loads (e.g., motors)
• 🔌 Connect JD-VCC and VCC properly for opto-isolation

✨ Key Advantages

• 🛡️ Safe signal isolation via optocoupler
• ⚙️ High current switching with small footprint
• 🔄 Works with Arduino, Raspberry Pi, ESP32, etc.
• 💡 Visual feedback with relay LEDs
• 🔧 Easy screw terminal wiring

🔗 Useful Links

• 📄 Datasheet