A relay is an electrically controlled one Switch that turns on, off, and toggles a circuit. Inside is a coil wound around an iron core. When current flows through the coil, a magnetic field is created that attracts an armature located at the end of the coil. This connects two contact fields with each other and closes the so-called work contacts in the relay (closer).

You know relays from cars, for example. There, indicators, windshield wipers and starters are controlled via a relay.

The relay circuit offers the advantage that you can operate it from a distance - ideal for smart home systems. Relays for the smart home can also be retrofitted: You can equip conventional light switches, sockets, shutters or other electrical consumers in your home with a relay actuator and then control them via your smartphone or tablet via an app.

You can get different ones in our online shop relay actuators of the brands wesmartify, essentials and Shelly.

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