International Journal of Current Engineering and Technology E-ISSN 2277 – 4106, P-ISSN 2347 – 5161 ©2022 INPRESSCO ® , All Rights Reserved Available at http://inpressco.com/category/ijcet Review Article 214| International Journal of Current Engineering and Technology, Vol.12, No.3 (May/June 2022) Internet of Things (IoT Devices)-A Literature Review Rajeev Kumar 1* , Rajat 2 Mani Raj 2 , Vandana 2 , Rohan 2 and Ritik Raj 2 1 Department of Bioscience and Bioengineering, Lovely Professional University Phagwara, Punjab. India. 2 Global Research Institute of Management and Technology. Radaur, Haryana, India. Received 10 April, Accepted 07 May 2022, Available online 11 May 2022, Vol.12, No.3 (May/June 2022) Abstract Moving into the future world, life will be getting more easier and easier because of internet of things (IOT). Nowadays with increased need for surveillance, monitoring and data collection IOT has become more important. Today almost all devices are equipped with sensors and are controlled by controllers such as from cars to vacuum cleaners, rockets to Vernier calipers, air conditioners to water pumps. By embedding intelligence in everyday objects, they turned into smart devices and can be controlled from anywhere in the world. This paper discusses about internet of things and its advantages and disadvantages. It discusses the applications of IOT in various fields such as city, agriculture, remote monitoring, smart street light, etc. This paper also tells about the history of IOT. Keywords: IoT, Surveillance, RFID, Autonomously, LoRa Introduction There has been a rapid development in the field of IOT due to its ability to provide service which made it the fastest growing technology, with its huge impact on social and business life. Internet of things, IOT alike its name; can be referred to as the internet of everything. According to the research by 2020, 50 Billion products will be connected to the internet. This means that use of IOT will be six times more efficient [1]. So according to the increasing demand the performance of IoT will be six times more efficient. In addition to the introduction of IOT technology manufacturers, many other service sectors are started the use of IoT. The internet of things (IoT) is an idea that could radically alter our relationship with technology. Many smart home devices will begin, everyday appliances like kettle and toasters. IoT in the education sector has now started to make the conventional education system more efficient and useful-smart innovative classroom are helping students to learn more. Even at the time of epidemic online classes has started students to continue their learning without any disturbance. IoT is used in a lot of electronic devices. The use of word ‘smart’ for electronics is only possible because of IOT. *Corresponding author’s ORCID ID: DOI: DOI: https://doi.org/10.14741/ijcet/v.12.3.3 As it makes the devices and machinery smart and automatic, so companies or organization need fewer human efforts and thus helping them to run these machineries in lower cost. At the Internet World Statistics there are more than 201 countries that use internet and 3,731,973,423 internet users by March 2017[2] Fig 1: Internet Users in the World by regions, IoT as an open and comprehensive network of intelligent objects which are capable of self-organizing and data sharing and those intelligent objects which have ability of reacting in any changes happening in our environment [3]. As it makes the devices and machinery smart and automatic, so companies or organization need lesser human efforts and thus helping them to run these machineries in lower cost.