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Control up to 65,280 relays with your arduino! .
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Arduino & Relay Wiring Diagram
How to Use Relays to Control High-Voltage Circuits with an Arduino
Guide for Relay Module with Arduino | Random Nerd Tutorials
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Control Up to 65,280 Relays with Your Arduino! - Hackster.io
Arduino 5V relay module KY-019 - Steps2Make
5 Volt 4 Channel Arduino Relay Module example - Arduino Learning
