Dr PVL Suvarchala, Pannala Mahitha, Gunde Akhila, Pathulothu Mahesh, Mangalampally Yashwanth Raj. SMART DOOR KNOCK OR OPEN-ALERT NOTIFICATION SYSTEM. AJACCM [Internet]. 2026 Jul. 9 [cited 2026 Sep. 14];6(3):199-208. Available from: https://ajaccm.com/journal/index.php/ajaccm/article/view/748