The 8 Channel 5V Relay Module is a robust, high-quality switching board designed for automation, control, and protection applications. Featuring optocoupler isolation, it ensures safe interfacing between high-voltage loads and low-voltage microcontrollers such as Arduino, ESP32, ESP8266, Raspberry Pi, and other 3.3V/5V logic devices.

This module supports both AC and DC loads, making it ideal for home automation, DIY electronics, and industrial control systems. Each relay can handle up to 10A at 250VAC, and LED indicators help you monitor the switching status of every channel.

Features

• Optocoupler Isolation:
  Protects your microcontroller from voltage spikes or load failures.

• 8 High-Current Relays (10A):
  Each relay supports up to 250VAC / 30VDC switching.

• Active Low Operation (Default):
  Relay activates when the input signal falls below ~2V.
  Can be switched to active high using onboard jumpers.

• Wide MCU Compatibility:
  Works directly with both 3.3V and 5V microcontrollers.

• LED Status Indicators:
  Each relay has an LED display to show ON/OFF status.

• High Input Impedance:
  Ensures minimal current draw from microcontroller pins.

• Back-EMF Protection:
  Prevents damage from inductive loads (motors, solenoids, etc.).

Specifications

• Operating Voltage: 5V DC

• Number of Channels: 8

• Relay Current Requirement: 15–20mA per channel

• Relay Rating: 10A @ 250VAC, 10A @ 30VDC

• Trigger Mode: Active Low (default), Active High selectable

• Isolation: Optocoupler-based input protection

• Indicators: 8× Status LEDs (one per relay)

• Suitable for: AC/DC Load Control, Automation, Robotics, Home IoT

Applications

• Home automation projects

• Industrial control systems

• Motor, lamp, fan, pump control

• Smart switches and IoT systems

• Robotics and automation

• High-voltage load switching with low-voltage logic

Package Includes

• 1 × 8 Channel 5V Relay Module with Optocoupler