5V 1 Channel Relay Module with Opto coupler

Overview

A single-channel, 5V relay module with an opto-isolated input for extra protection between the control signal and the switching side.

Key Specs

Features

• Opto-isolation protects the driving MCU from switching noise
• Screw terminals for COM/NO/NC

Compatible With

Arduino, and other 5V-logic MCUs directly

Use Cases

• Switching a single AC appliance or DC load with extra isolation

FAQ

What's the max switching load? Check the relay's printed rating (commonly 10A @ 250VAC) — never exceed it.