Description: Soil Moisture Detection Humidity Sensor 

Soil Sensor DC 3.3V 5V LM393 IC Chip Smart Electronics Soil Moisture Detection Humidity Sensor Module For Arduino Development Board DIY Electrical Circuitry & Parts

Finally, your plants can speak to you! Just don’t be upset when it’s only to let you know when they need something.

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. Water is conductive, so the more water in the soil, the better the conductivity and the lower the resistance with a higher SIG out.

Use it in a home automated watering system, hook it up to IoT, or just use it to find out when your plant needs a little love. Installing this sensor and its PCB will have you on your way to growing a green thumb!

Instructions for Use: 

Soil moisture module is most sensitive to the ambient humidity is generally used to detect the moisture content of the soil
Module to reach the threshold value is set in the soil moisture, DO port output high, when the the soil humidity exceeds a set threshold value, the module D0 output low
The digital output D0 can be connected directly with the microcontroller to detect high and low by the microcontroller to detect soil moisture The digital outputs DO shop relay module can directly drive the buzzer module, which can form a soil moisture alarm equipment Analog output AO and AD module connected through the AD converter, you can get more precise values of soil moisture

• 1. VCC: .3 V-5V
  2. GND: GND
  3. DO: digital output interface (0 and 1)
  4. AO: Analog Output Interface

Package Include:

• 1 x Soil Moisture Detection Humidity Sensor Smart Electronics Soil Moisture Hygrometer Detection Humidity Sensor Module For Arduino Development Board