Soil Moisture Sensor Module Kit, Hygrometer Detection Module with Connecting Cables for Arduino Development Board, DIY Robot and Smart Car Projects

This soil moisture sensor kit pairs a two-prong probe with an LM393 comparator board, giving you both a raw analog moisture reading and a clean digital wet/dry signal whose threshold you set with the onboard potentiometer.

It is the classic entry point for automatic plant watering: read the analog value with Arduino or ESP32, or let the digital output drive a relay and pump directly - no code required. LEDs indicate power and trigger state to make classroom debugging painless.

Note: resistive probes are best for short-term and learning use; for permanent outdoor installs consider our capacitive sensor, which resists corrosion.