8CH 12V Relay Board

An 8-channel 12 V relay module with optocoupler isolation on all inputs — allowing any microcontroller to independently switch 8 separate AC or DC loads. Each relay provides both normally-open and normally-closed contacts, with individual LED status indicators for every channel.

🔹 Key Applications

• Home automation 8-zone control (lights, outlets, HVAC)

• Arduino or Raspberry Pi GPIO load switching

• Industrial process 8-stage sequencing

• Irrigation 8-zone controller

• Remote-controlled multi-output switching systems

• Automated test fixture switching

🔹 Why Choose This Module?

• 8 independent channels — control 8 separate loads independently

• Optocoupler isolation — full electrical separation between MCU and loads

• NO and NC contacts — maximum wiring flexibility

• Individual channel LED indicators — visual state confirmation

• 12 V coil operation — powered from common 12 V supply

🔹 Technical Specifications

• Channels: 8

• Coil Voltage: 12 V DC

• Contact Rating: 10 A / 250 V AC or 10 A / 30 V DC

• Isolation: Optocoupled (full MCU-load isolation)

• Trigger: Active LOW

• Indicators: LED per channel

🔹 What's Included

1 × 8-Channel 12V Relay Module

🔹 Pro Tip

💡 Share the relay module's GND with your Arduino's GND to ensure the optocouplers trigger correctly. For mains-voltage switching, always use appropriately rated wire and connectors on the AC side and ensure the relay module is mounted in an insulated enclosure. Never mix signal and mains wiring paths.

⚠️ Note: Always ensure proper heat dissipation and correct voltage configuration before powering connected devices.