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

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

Arduino Relay Tutorial - Circuit Geeks

ESP32 Relay Module - Control AC Appliances (Web Server)

5V LSR Light Sensitive Sensor Relay Light Control Switch Photoresistor Optical Relay Module for Arduino DIY: : Industrial & Scientific

KY-019 5V Relay Module - ArduinoModulesInfo

5V Dual-Channel Relay Module - Pinout, Specification, Application, Working, Datasheet

5V Dual Channel Relay Module Pinout, Working, Interfacing with Arduino

In-Depth: Interface One Channel Relay Module with Arduino

Using Sensors with 5V Relays on the Arduino

Arduino - Relay Arduino Tutorial

How to Set Up a 5V Relay on the Arduino - Circuit Basics

Interfacing Relay with Arduino Uno

Guide for Relay Module with Arduino