Hi Swaroop,

Netro's algorithm calculates the soil moisture level by taking a lot of factors into consideration: soil type, sprinkler type, manual watering, rainfall, weather information, evaporation and other factors and the moisture level impacts the watering schedules. After installation, we set the moisture level to be normal level (e.g. 75%) by default. This value is usually not very far from the real fact. 

Thanks,

Netro Support