Acessório muito fácil de utilizar e muito útil para testar aplicações de automação. Evita erros de ligação em sistema de rede Corrente Alternada, o que pode ser muito perigoso para hobbystas. Recomendo.
Arduino Relais. Connectable with 5V, Ground and a signal wire. Programmable on the digital pins with HIGH or LOW on the output. The Relais contains a LED that switches on when the relais is closed (HIGH).
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