AHAD, ROSNEE, Nur Suhaila Rosli, and Mohamad Zaid Mustafa. “Child Presence Detection Car Alarm System Using GSM”. Research and Innovation in Technical and Vocational Education and Training 1, no. 2 (September 26, 2021): 028–041. Accessed May 2, 2024. https://publisher.uthm.edu.my/periodicals/index.php/ritvet/article/view/208.