Development of Low-Cost IoT System for Monitoring Piezometric Level and Temperature of Groundwater. - Mauro Espinoza Ortiz; Juan Pablo Apún Molina; Salvador Isidro Belmonte Jiménez; Jaime Herrera Barrientos; Héctor José Peinado Guevara; Apolinar Santamaria Miranda (Sensors, 2023)