Crab Monitoring System (CMS) using Internet of Things (IoT’s) Ayi Rahmat, Dietrich G. Bengen, Dea Fauzia Lestari, Syamsul B. Agus, Riza A. Pasaribu, Dedi Jusadi and Donwill Panggabean BIO Web Conf., 106 (2024) 01001 Published online: 03 May 2024 DOI: 10.1051/bioconf/202410601001