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 Moisture Sensor
 Moisture Sensor
 Moisture Sensor

Moisture Sensor

₹39 ₹99 60.61% OFF

  • Operating voltage: 3.3V~5V
  • Dual output mode, analog output more accurate
  • Having LM393 comparator chip, stable
  • Soil Probe Dimension: Approx. 6cm x 3cm
  • Cable Length: Approx.21cm
  • DO: digital output interface(0 and 1)
  • AO: analog output interface

An appliance for monitoring the moisture level

Moisture Sensor:


Here are some key features and considerations for moisture sensors:

  1. Type of Measurement: Moisture sensors typically measure the volumetric water content (VWC) in soil, which is the percentage of soil volume occupied by water. Some sensors may also provide a qualitative measure of soil moisture, indicating whether the soil is dry, moist, or wet.
  2. Sensing Principle: There are different sensing principles employed by moisture sensors, including resistive, capacitive, and frequency domain methods. Each type of sensor has its advantages and is suitable for specific applications.
  3. Measurement Range: The measurement range of a moisture sensor indicates the span of moisture levels it can accurately detect. Different plants and soils may require sensors with different measurement ranges.
  4. Accuracy: Accuracy is a crucial parameter, indicating how closely the sensor's measurements align with the true moisture content. It is often expressed as a percentage.
  5. Response Time: Response time refers to how quickly the sensor can detect changes in moisture levels. Faster response times are desirable for applications that require real-time monitoring.
  6. Temperature Compensation: Moisture sensors may include temperature compensation features to account for temperature variations that can affect moisture readings.
  7. Power Supply: The power supply requirements for moisture sensors vary. Some sensors operate on low voltage, making them suitable for battery-powered applications, while others may require higher voltages.
  8. Output Type: Moisture sensors typically provide analog or digital outputs. Analog sensors give a continuous reading proportional to the moisture level, while digital sensors may provide discrete values or trigger thresholds.
  9. Calibration: Calibration is essential to ensure accurate readings. Some moisture sensors may require periodic calibration to maintain accuracy.
  10. Installation: Proper installation is crucial for accurate measurements. The sensor should be placed at an appropriate depth in the soil, considering the root zone of the plants being monitored.
  11. Housing: Moisture sensors are often enclosed in protective housings to shield them from environmental factors and ensure durability.
  12. Compatibility: Consider the compatibility of the moisture sensor with the microcontroller or data logging system used for data acquisition. Many sensors are compatible with popular platforms like Arduino or Raspberry Pi.
  13. Applications: Moisture sensors find applications in agriculture, horticulture, environmental monitoring, and irrigation systems to optimize water usage and promote plant health.


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The Soil Moisture Sensor is a simple breakout for measuring the moisture in the soil and similar materials. The soil moisture sensor is pretty straightforward to use. The two large, exposed pads function as probes for the sensor, together acting as a variable resistor. The more water that is in the soil means the better the conductivity between the pads will be and will result in lower resistance, and a higher SIG out.

To get the Soil Moisture Sensor functioning all you will need is to connect the VCC and GND pins to your Arduino-based device (or compatible development board) and you will receive a SIG out which will depend on the amount of water in the soil.


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