LOW-COST AND ENERGY-EFFICIENT SECURITY SYSTEM USING PASSIVE INFRARED SENSOR (IR). International Journal of Food and Nutritional Sciences, [S. l.], v. 10, n. 11, p. 240–243, 2021. Disponível em: https://www.ijfans.org/index.php/Journal/article/view/4372. Acesso em: 10 sep. 2026.