موديول ريلاي 5 فولت (8 قنوات)

8-Channel 5V Relay Module with Optoisolation

The 8-Channel Relay Module is a powerful interface board used to control high-power devices—such as motors, lights, and AC appliances—directly from a microcontroller. Since microcontrollers cannot output enough current to drive these loads, this module acts as a bridge, allowing a low-power 5V signal to switch much larger voltages and currents.

Key Features

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  8 Independent Channels: Control up to eight separate devices simultaneously from a single board.

  
  


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  Optocoupler Isolation: Provides complete electrical separation between your microcontroller and the high-power load, protecting your electronics from surges and interference.

  
  


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  High Load Capacity: Each relay is rated to handle up to 10A at either 250VAC or 30VDC.

  
  


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  Visual Status LEDs: Eight onboard LEDs provide instant visual confirmation when a specific relay is activated.

  
  


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  Low-Level Trigger: The relays activate when the control pin receives a "Low" (GND) signal, making it highly compatible with standard digital outputs.

  
  

Technical Specifications

Pinout & Connection Guide

Control Header (Low Voltage Side)

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  VCC: Power for the optical isolators (Connect to 5V).

  
  


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  GND: System ground.

  
  


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  IN1 to IN8: Control inputs. Pull a pin to GND to trigger its corresponding relay.

  
  


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  JD-VCC Jumper: Connects the relay coil power to the isolator power. For maximum safety, remove the jumper and provide a separate 5V supply to JD-VCC to keep the relay power fully isolated from the microcontroller.

  
  

Output Terminals (High Voltage Side)

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  COM: Common terminal.

  
  


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  NO: Normally Open (The circuit is disconnected until you trigger the relay).

  
  


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  NC: Normally Closed (The circuit is connected until you trigger the relay).

  
  

Common Applications

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  Home Automation: Smart lighting drivers and appliance switching.

  
  


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  Robotics & Mechatronics: Controlling DC/AC motors and heavy-duty actuators.

  
  


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  Industrial Control: Managing high-current devices from Arduino, Raspberry Pi, or STM32 systems.