Capacitive Soil Moisture Sensor V1.2: Built to Last Outdoors

capacitive soil moisture sensor v1 2

Most soil sensors fail because the electrodes corrode. That’s a known problem with resistive types—especially in fertilizer-heavy soil. The capacitive alternative uses a different approach: the sensing element is protected behind a coating, so it measures moisture without direct metal contact. The V1.2 version refines that principle further, with tweaks that improve the output stability under fluctuating temperatures. Kingmach supplies this sensor as part of a broader geotechnical range. If your project calls for a specific cable length or connector, customization is on the table. The sensor works with common microcontrollers, and the analog output can be read by most data loggers. We often see it used in greenhouse control, irrigation scheduling, and environmental research.