[](https://travis-ci.org/PolymerElements/iron-signals) _[Demo and API Docs](https://elements.polymer-project.org/elements/iron-signals)_ ##<iron-signals> `iron-signals` provides basic publish-subscribe functionality. Note: avoid using `iron-signals` whenever you can use a controller (parent element) to mediate communication instead. To send a signal, fire a custom event of type `iron-signal`, with a detail object containing `name` and `data` fields. this.fire('iron-signal', {name: 'hello', data: null}); To receive a signal, listen for `iron-signal-` event on a `iron-signals` element. You can fire a signal event from anywhere, and all `iron-signals` elements will receive the event, regardless of where they are in DOM.