Kh.  Asaduzzaman, M.  Nazrul Islam, M.  Shahjamal, Mahbubul  Hoq, 
    Infrared Security Alarming System,
    Asian Journal of Information Technology,
    Volume 9,Issue 4,
    2010,
    Pages 243-247,
    ISSN 1682-3915,
    ajit.2010.243.247,
    (https://makhillpublications.co/view-article.php?doi=ajit.2010.243.247)
    Abstract: A low-powered (4.5-5 V) security alarming system using infrared sensor and detector mechanism has been constructed and tested. An IR transmitter (IR diode) and a receiver (Photo transistor) have been used. The system is connected to a multidirectional buzzer/siren or any kind of sounder to alert people from any threat to make sure the property is completely protected.
    Keywords: Security;sensor;infrared;detector;designed;transistor