A switch or multiple switches that is operated by an electromagnet. A relay lets you use one circuit to control another, often so a low voltage or low current signal can switch a higher voltage or power.

A high-power relay used for switching line power is often called a contactor.

Some relay modules [often just called relays] include decoders to allow control via DMX or some other serial protocol.

A solid-state relay replaces the mechanical switch and electromagnet with an optocoupler and a triac.

This page has been seen 4,040 times.

    • Created by on

Industry Advertising

Recent Activity

Readability Information

An automated review of this page attempts to determine its readability in English (US). The page contains roughly 84 words across 5 sentences.
Readability score
Readability score: 38.71
Grade level
For the information in this page to be accessible to the widest audience of readers, both a high readability score and a low grade level are ideal.

Icon Legend

  • Normal page
  • Color code

    • Content has new updates
    • Content has no updates

CB Advertising