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A relay module is a piece of electrical equipment that provides protection and isolation to relays. Find out more about this board and the best manufacturers here.

It seems like everything has gotten smarter, thanks to the evolution of embedded technology and the proliferation of IoT platforms. Even the humble switch is now more intelligent. Smart switches are often used as replacements for traditional built-in switches. Naturally, a user can still physically turn lights or devices on and off with a smart switch, but these switches can also be controlled by the user’s voice – via an audio assistant like Amazon’s Echo or Google Home – or with an application on a smartphone. There are several good reasons for using a smart switch. One is that a sm...