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Learn how to use an Arduino and a 5V relay to control a 120-240V lamp with the light detected by a a photoresistor.
PIR sensors to trigger seperate switches on relay module - Project Guidance - Arduino Forum
NOYITO 0-5A AC Current Detection Sensor Module Switch Output (DC 5V, Green) : Industrial & Scientific
PIR Motion Sensor Light Switch Motion Sensor PIR Light Switch
5V Single Channel Relay Module Pinout, working, Interfacing, Applications
5V Single-Channel Relay Module - Pin Diagram, Specifications, Applications, Working
5v relay activation - General Electronics - Arduino Forum
Arduino - 4-Channel Relay Module
Control a Solenoid With Arduino
Guide for Relay Module with Arduino
220v avoidance switch using FC-51 without arduino