How does KY-019 5V Relay Module works?
The KY-019 5V Relay Module is an electromechanical switch that allows a low-power control circuit to switch a high-power load on or off. Here’s a detailed explanation of how does the KY-019 5V Relay Module works: Components of the KY-019 5V Relay Module Working Principle Example Use Case Suppose you want to control a lamp…