6-Channel Relay Module 5V with Optocoupler Isolation – High/Low Level Trigger for Arduino & Smart Home in Pakistan

Overview

The 5V 6-Channel Relay Module is an interface board that enables the safe control of high-voltage appliances from low-voltage microcontrollers, such as Arduino, ESP32, Raspberry Pi, or PIC. Each channel is equipped with optocoupler isolation, which separates your sensitive controller circuitry from the high-voltage side using light signals. This prevents electrical noise, spikes, and reverse EMF from resetting or damaging your microcontroller during heavy load switching.

Key Features

• Optocoupler Isolated Protection: Photoelectric isolation ensures maximum safety for your Arduino or ESP32 dev boards.

• Flexible Triggering: Most variants feature adjustable jumpers, allowing you to set each channel to either a High-Level or Low-Level trigger.

• Status LEDs: Individual LED indicators for each channel let you see at a glance which relays are currently active.

• Standard Screw Terminals: Features robust NC (Normally Closed), COM (Common), and NO (Normally Open) terminals for secure wiring.

• Industrial Grade Contact Rating: Capable of switching up to 10A AC or DC loads reliably.

Technical Specifications

Wiring Terminal Guide

• NO (Normally Open): The circuit stays disconnected until the relay is triggered.

• COM (Common): The main terminal where you connect your live load wire.

• NC (Normally Closed): The circuit stays connected until the relay is triggered.