The Soil Moisture Sensor uses capacitance to measure the water content of soil (by measuring the dielectric permittivity of the soil, which is a function of the water content). The output from the sensor is an analog voltage value between 0 to 5 V, which is linearly proportional to the moisture percentage of the soil.
- Dual output mode, analog output more accurate
- A fixed bolt hole for easy installation
- With power indicator (red) and digital switching output indicator (green)
- Having LM393 compactor chip, stable.
This is Soil Moisture Meter, Soil Humidity Sensor, Water Sensor, and Soil Hygrometer for Arduino. With this module, you can tell when your plants need watering by how moist the soil is in your pot, garden, or yard. The two probes on the sensor act as variable resistors. Hook it up to IoT, or just use it to find out when your plant needs a little love.
The soil moisture sensor consists of two probes that are used to measure the volumetric content of water. The two probes allow the current to pass through the soil and then it gets the resistance value to measure the moisture value.
When there is more water, the soil will conduct more electricity which means that there will be less resistance. Therefore, the moisture level will be higher. Dry soil conducts electricity poorly, so when there will be less water, then the soil will conduct less electricity which means that there will be more resistance. Therefore, the moisture level will be lower.
Operating Voltage (VDC)
3.3 ~ 5
Approx.3cm x 1.5cm
Soil Probe Dimension
Approx. 6cm x 3cm
Cable Length (cm)
8 × 6 × 3 cm
How to Connect Soil Sensor?
Connect the two pins from the Sensor to the two pins on the Amplifier circuit via hook up wires. Connect the Vcc from the Amplifier to the 3.3V pin on the Arduino and the Gnd pin to the Gnd pin on the Arduino. Now connect the Analog Data Pin to the A0 pin on the Arduino
Package Includes :
1 x Soil Moisture Sensor Kit
1 x Plastic Soil Moisture Meter Testing, Humidity, Water Sensor, Hygrometer Detection Module for Arduino and Other MCU, 3.5 Inch
Value for money
Nice quality. not sure if it corrodes or not. otherwise great product.
It has a fixed bolt becz of that it's easy to install. nice product must buy.
Country Of Origin: China
Imported and Marketed By:
Select Brands International Pvt Ltd