IoT based Home Automation System | How Does It Work? [Explained]

The Modern era has all of us always on our heels, chasing our own different dreams, thus leaving us short of time. So much so that we only deal with things that are absolutely necessary, brushing everything and anything else aside. These small things can be extremely important too. Thus it can be potentially dangerous to avoid them completely. So we need someone (or something) that can do our bidding. Something that and can take care of small details when we can’t. That is where the IoT based home automation system jumps right in.

Starting Off

The IoT based home automation system is one of the most in-demand modern technologies for good reasons. It provides the breather that we all crave for, a break from handling a million different things at home. From answering the door for you to making sure your house is safe at all times, IoT home automation has got it all covered.


There is a lot that goes on behind the curtain when you command Alexa. Whether it is to dim the lights or call a routine. The home automation using IoT involves a lot of components and factors. They coordinate and communicate at all times to make sure things go smoothly.

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The Amalgamation Of Advanced Gadgets

For a home automation system to do as it promises, and to do it effectively, a bunch of devices has to work in perfect synchronization. There is a central and dedicated controller. Then there are the devices, the sensors, and of course, you’ll need a top-notch internet connection for an extraordinary real-time experience.

IOT Gadgets
IOT Gadgets

On top of all of that is the cloud, which makes the remote access and control of everything a real breeze.

IoT in home automation comes with certain elements in tow. All of which collectively provide the IoT home automation system reliability that it is famous for.

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The Devices-Providing Artificial Senses To Your Humble Abode

No, this is in no way an over-exaggeration. Scattered through your home are various big and small gadgets that control every inch of it, from bathroom floor lights to the living room temperature.

These devices make a connection using the mesh topology. Each device connects to every other device over a single common network. Now, consequently, as all the gadgets and ultimately, their actions are connected to and affected by each other, one can trigger the other. For instance, some people have a routine that when floor sensors sense an activity, the ones controlling the lights becomes active to turn the lights on in the late hours.

To communicate and conduct the signals well from farther parts of the house in IoT based Home automation system, some sensors acts as network extenders and are purposely situated right in the middle of two far off devices. A perfect example of these is Smart plugs, which can be placed anywhere in the home.

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Protocols-The Regulators

Protocols are required to see to it that everything is done accordingly. It makes sure that everything follows the book. Protocols confirms that the operations are going just fine. For communicating TO and FRO, via wireless connectivity, protocols like Zig-bee, Z-wave and Wi-fi are the most popular ones.

Wi-fi, most used and loved by us all, works through radio frequencies, connective devices to the network, and to each other and providing internet access through routers.

IOT Protocols
IOT Protocols

With the other two controllers, what happens is that they have a unique network ID to identify and distinguish them. Distance plays a crucial role in decision making. Signals adopt the path with the shortest distance. If in between the path, while traveling from the sensor to sensor, there comes a blockage or interruption, then the signals adopt next shortest path .

Fun fact, the sensors of your home can’t interact with the ones in your neighbor’s house as they have different network IDs. That is just the way how smart home automation using IoT makes things a whole lot easy for you.

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The Gateway-The Brain of Your IoT Based Home Automation System

I have kept the best and the most important for the last. A hub or a gateway or a controller, whatever you call it – but what is essential for you to understand here is that a controller is what bridges all sorts of gaps and brings home automation and IoT together. It is a never-seen-before duo, to maintain your homes flawlessly.

IOT Working
IOT Working

It is on the top level, and the communication to the cloud goes through it. The cloud tells it what to do, and it, in turn, passes over the commands to the underlying sensors. This and the fact that everything is cloud-based makes it entirely possible and feasible to control everything from a device as small as a cellphone. Talk about technology bridging the gaps, huh?

Other Things That Stand Out

IoT based home automation system makes sure that you are always in the loop while it is operating. So it keeps sending you updates via your preferred methods, whether it is notifications via emails or text messages.

When a task is done, or a routine is successfully called, the controller updates it on the central servers on the cloud, which, consequently, makes you aware of it. For example, when the sensors detect smoke, a fire alarm is invoked, and you are beeped of it on your phone so that you can take relevant measures, or when you ask for the remote-controlled blinds to be shut when the sun starts sinking in the west.

Internet Of Things
Internet Of Things

Another scheme that makes the IOT automation system such a success is the “If This Than That” thing. It is nothing but the phenomenon of performing a certain action when a particular task reaches completion.


In this contemporary world where new technologies replace old technologies on a regular basis. If a particular one stays longer and/or captivates attention longer, then it has to be commended and looked forward too.

Home automation is one such revolutionizing bit of tech. Now that you’ve read how IoT based Home automation system works, maybe you can consider trying it? I am sure it’d be a pleasing experience. If you have any problem regarding that, don’t think twice before reading the article.

Please stay tuned for more. 

That is it for today!

Also read: Top 4 Smart Home Apps for a Comforting Life in 2020

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Avatar for Rahul Gupta
He is a Tech Geek, Gadget Expert, SEO Expert, Web Designer, and a Blogger. Having a technology background gives him a unique perspective on what is the latest and best when it comes to tech.