3pcs Analog Capacitive Soil Moisture Sensor V1.2 Wide Voltage Corrosion Resistant with Cable for Arduino Raspberry Pi : Amazon.es: Bricolaje y herramientas
Sensors | Free Full-Text | Automated Low-Cost Soil Moisture Sensors: Trade-Off between Cost and Accuracy
Capacitive Soil Moisture Sensor — Biomaker.org
Capacitive- Soil Moisture Sensor, Corrosion Resistant For Arduino Moisture | Fruugo ES
DEBO CAP SENS: Development boards - soil moisture sensor, capacitive, analogue at reichelt elektronik