Soil sensor - Robocraze 5V Soil Moisture Sensor Module - (Pack of 1)
This is Soil Moisture Meter, Soil Humidity Sensor, Water Sensor, Soil Hygrometer for Ardunio. With this module, you can tell when your plants need watering by how moist the soil is in your pot, garden, or yard.
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 comparator chip, stable.
Operating Voltage: 3.3V~5V