• The soil hygrometer humidity detection module is used to detect moisture in the soil. It is sensitive to ambient humidity. The module’s output level is high when the soil is dry, and low when the output level is low. The sensor can be used to create an automatic watering system.
• A fixed bolt hole for easy installation | With power indicator (red) and digital switching output indicator (green) | Having LM393 comparator chip | Stable | Dual output mode
• Operating Voltage: 3.3V~5V | With power indicator (red) and digital switching output indicator (green) | FC-28 with LM293 || Interface Description (4-wire): VCC: 3.3 V-5V | GND: GND | DO: Digital output interface (0 and 1) | AO: Analog output interface
• Digital output: Sensors typically provide a digital output signal, which can be easily interfaced with a microcontroller such as a Raspberry Pi. This digital output simplifies the process of reading soil moisture levels and allows for easy integration into electronic projects.

Accuracy and Calibration: The accuracy of a soil moisture sensor can vary depending on factors such as soil type, temperature, and sensor calibration. It is important to properly calibrate the sensor for the specific soil type and conditions in which it will be used to ensure accurate readings.