Mrs.A.Jansi Rani, Ms.Abitha O., Ms. Annie Sanjana S. R., and Ms.Inbamala T. A. “ENERGY CONSERVATION USING PIR SENSORS”. Galaxy International Interdisciplinary Research Journal, vol. 10, no. 6, June 2022, pp. 666-73, https://internationaljournals.co.in/index.php/giirj/article/view/2223.