‪@TechnoVillage2024‬
In this video we have shown how to use Relay Module or Relay board. This module is compatible with Arduino board, it operates at 5 volt., no external components required. In this video we have used a 4 Relay Module. It has 4 relays in 4 independent sections. When relay is operated it closes the N/O contact. N/C and N/O contacts are available in relays. It isolates the electronics circuits to external loads. The main catch is the points IN1 to IN4 are Active Low points. That means when we apply ground or zero volt to any IN pin, the relay operates. I purchased this from rees52.

https://www.amazon.in/sspa/click?ie=U...


https://rees52.com/5v-4-channel-relay...