A. Saeed, H.; H. Mazlan, M.; H. Ibrahim, A.; E. Hamzah, H.; H. Qasim, H.; A. Gore, A.; I. Hamza, M. IoT Health Monitoring System for Preventing and Controlling Risk in Confined Space Using Microcontrollers. IJET 2019, 8 (4), 619-626. https://doi.org/10.14419/ijet.v8i4.30134.