Batubara FAB, Sundawa BV, Rusdi M. Prototype Of Soil Analyzer Devices Based On Long Range (LoRa) Communication System. Mantik [Internet]. 2021Aug.30 [cited 2026Jun.13];5(2):1361-7. Available from: https://www.ejournal.iocscience.org/index.php/mantik/article/view/1557