Using Sensor Data to Activate a 5V Relay on the Arduino - Circuit Basics

Learn how to use an Arduino and a 5V relay to control a 120-240V lamp with the light detected by a a photoresistor.

5V Single-Channel Relay Module - Pin Diagram, Specifications, Applications, Working

How to use a 5V Relay with Arduino

How to Use a Relay Module with Arduino

Interfacing Relay with Arduino Uno

Solenoid valve with Arduino, Arduino interface with Solenoid Valve

Arduino Relay Tutorial: Control High Voltage Devices with Relay Modules - Latest Open Tech From Seeed

Arduino Relay Basics - How It Works and How to Use It : 7 Steps - Instructables

Guide for Relay Module with Arduino

ESP8266 NodeMCU Relay Module - Control AC Appliances (Web Server)

In-Depth: Interface Two Channel Relay Module with Arduino