Hydroponic HF04

Hydroponics is a subset of Hydro culture, the method of growing plants without soil, using mineral nutrient solutions in a water solvent.
Terrestrial plants may be grown with only their roots exposed to the mineral solution, or the roots may be supported by an inert medium, such as perlite or gravel.

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The nutrients in hydroponics can come from an array of different sources; these can include but are not limited to byproduct from fish waste, duck manure, or commercial fertilizers.
This product has 4 relay control which can be used to control 4 different motors to spray water Hydroponic.
The timing for each motor can be controlled and configured via Bluetooth application.