Everything You Need To Know About IR Blaster

Ever wondered How does IR Blasters work? How you can use your Smartphone as Remote for various Electronic Devices? I am pretty sure you did. So in this Article, I am going to explain how IR Blasters work in your Smartphone or How you can use your Smartphone as a remote for Electronic equipment like TV, AC, Music Player, DVD Player and much more.

IR Blasters are the very useful add-on in Smartphone. The first smartphone with IR Blaster was introduced in India by Xiaomi. After that Xiaomi launched many smartphones with IR Blaster. Other Companies were not able to provide this feature in their Smartphones. IR Blasters are also sometimes fun to use like you can use it to annoy your teachers by switching off Projector or something like that. Well talking aside let’s see How does IR Blaster work?

Below we will answer some of the Basic questions related to IR Blasters like What is IR Blaster, How IR remote works?, How IR Blasters work?, and Types of IR Blasters.

What is an IR Blaster?

An infrared blaster (or IR blaster) is a device that emulates an infrared remote control to autonomously control a device that is normally controlled only by remote control key presses.

It works with Infrared rays. Infrared (IR) radiation is a type of electromagnetic radiation. The wave is longer than light which humans can see and shorter than microwaves. The word infrared means below red. It comes from the Latin word infra (below) and the English word red.

How IR remote works?

An IR remote (also called a transmitter) uses light to carry signals from the remote to the device it controls. It emits pulses of invisible infrared light that correspond to specific binary codes.

These codes represent commands, such as power on, volume up, or channel down. The controlled device (also called the receiver) decodes the infrared pulses of light into binary code that its internal microprocessor understands. Once the signal is decoded, the microprocessor executes the commands.

IR remotes use LED lights to transmit their infrared signals. This results in a few limitations of the technology. Since light is used to transmit the signal, IR remotes require line-of-sight, which means you need an open path between the transmitter and receiver. This means that IR remotes won’t work through walls or around corners. They also have a limited range of about 30 feet.

How IR Blaster Works?

The working of IR Blaster is pretty much the same as that of a remote control except that there is a digital to IR light converter in the IR Blaster. The digital signals produced by the up and down pulses of electricity while IR light is completely invisible. They are used because they have a better transfer rate and can travel through the air without causing any threat to anyone.

If the system is neatly configured, the beam generated by the IR Blaster can be used to control devices such as TV’s and computers while, at the same time, control devices such as VCR or DVR using an IR remote control.

Types of IR Blasters

1] Internal IR blaster

This type of IR blaster will be present in the devices by default i.e IR blaster is included in the device by the manufacturer let it be either in a remote control or Mobile phone or any other device.

2] External IR blaster

This type of IR blaster will not be given inbuilt in the devices. This should be attached as a piece of external equipment to the device. These can be connected via USB port or 3.5 mm headphone jack according to your choice.

IR blaster is not sufficient to control the devices. There need to be software installed on your device which is integrated with the IR blaster. One such example is the “Mi remote” app. There are many other apps available in the play store.


The main use of an IR blaster is to control secondary device through a primary device with the help of an infrared remote control. IR blasters can be used for many electronic devices and there is no limit to its extent. The devices vary from TV’s, PC’s, VCR, home theatre, big screen projectors and so on. Another application of the device includes the extending of the range of the IR remote by keeping the blaster in a closed area, in hiding, or even at an angle that the remote cannot “see”. There are also USB IR blasters which can be connected to computers. Through this device, all the other IR devices in the room can be easily controlled.


1] User-friendly
2] The user can sit still in one place and handle all the devices in the room.
3] Can be configured to work with special devices and also paired with computer applications like EyeTV and RealBasic.
4] No need of an external power supply for the device as it gets self-powered from the device it is connected to.


1] Configuring the device at the beginning is difficult and confusing.
2] The cost of the device is considerably low but may go up according to the sensitivity, output power levels, and other chosen factors.

So this is all you need to know about IR Blaster. I hope this Article was Helpful for you. Please comment your thoughts below.

Also Read : Top Trending Searches on Google in 2018

Manish Garhwal

Manish is Article writer at Global Technology Updates. Loves Programming and Xiaomi. He is Xiaomi Software Repairer. Gaming is one of main part of his daily routine. He is currently Studying Computer Science Engineering in Thakur Shivkumar Singh Memorial Engineering College.

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