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

Overview

The 5V 8-Channel Relay Module is a heavy-duty microcontroller interface board that enables safe, multi-channel control of high-voltage and high-current AC/DC loads. It bridges the gap between low-power digital logic (Arduino, Raspberry Pi, ESP32, STM32) and main appliances like lights, fans, heavy solenoids, and AC motors. Designed with complete optocoupler optical isolation, it fully segregates your processor’s power rail from the electrical noise and back-EMF spikes of the inductive loads, guaranteeing crash-free performance.

Key Features

• 8 Fully Independent Channels: Control up to 8 separate electrical devices simultaneously from a single compact board.

• Optical Optocoupler Isolation: Provides total electrical isolation between the control signal loop and the high-voltage load.

• Dual-Trigger Flexibility: Features an onboard jumper array allowing individual channels to be configured for either High-Level or Low-Level logic triggers.

• Real-Time LED Indicators: Bright onboard SMD LEDs give clear, instant visual confirmation of each relay’s activation state.

• Robust Screw Terminals: Industrial-grade blue terminals provide rock-solid wiring for NO (Normally Open), COM (Common), and NC (Normally Closed) lines.

Technical Specifications