5v relay working principle

Speaking of 5v relays, I believe that people in the electrified society are no strangers, because who doesn't have a 5v relay at home now? From the button switch on the wall to the main power switch, adults and children can use it. More broadly, there are many relays that we come into contact with every day, such as intermediate relays, time relays, current relays, voltage relays, thermal relays, temperature relays, gas relays, etc. The different uses of these relays can also be guessed from the names.

When working, the electromagnet is energized, the armature is sucked down to make D and E contact, and the working circuit is closed. When the electromagnet loses its magnetism, the spring pulls the armature up, cutting off the working circuit. Therefore, the working principle of the 5v relay is to use the electromagnet to control the on-off switch of the working circuit. The advantages of controlling the circuit with the working principle of 5v relay: control high voltage with low voltage; remote control; automatic control.