12V 4-Channel Optocoupler Relay Board Module Arduino Compatible

The 12V 4-Channel Optocoupler Relay Board Module is a versatile switching module designed for controlling higher voltages with microcontrollers including Arduino, ARM, AVR, and PIC. Featuring SMD optocoupler isolation for stable performance, NO/NC relay contacts rated at 10A, and selectable high/low level triggering via jumper, it is ideal for smart home control, industrial automation, PLC control, and MCU-based projects.

Key Specifications

• Operating Voltage: 12V DC
• Number of Channels: 4
• Switching Capacity: 10A
• Maximum Load: AC 250V / 10A, DC 30V / 10A
• Trigger Current: 5 mA
• Isolation: SMD Optocoupler
• Trigger Level: Selectable High / Low (via jumper)
• Relay Contacts: NO / NC
• Dimensions: 72mm (L) × 55mm (W) × 19mm (H)
• Weight: 80g
• Indicators: Power LED (Green), Relay Status LED (Red) per channel

Module Interface

• DC+: Positive power supply (VCC)
• DC-: Negative power supply (GND)
• IN1–IN4: High or low level relay control inputs
• NO1–4: Normally Open relay outputs
• COM1–4: Common relay interfaces
• NC1–4: Normally Closed relay outputs

Package Includes

• 1 x 12V 4-Channel Optocoupler Relay Board Module Arduino Compatible

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