yardeen micro automatic drip irrigation kit self watering system sprinkler controller for indoor potted plants color green yardeen product description:<br> > indoor use only.<br> > use clean water only.<br> > automatic water your plants and flowers precisely and at ease.<br> > reduce water by 70% over traditional sprinklers by focusing water directly to the root.<br> >flowers, plants, bonsai and potted fruit, for family homes, hotels, clubs, offices and other plants of intelligent care.<br> watering the garden, potted plants, shrubs and trees is no longer a chore, its fun<br><p> features:<br> > 4x aa 1.5v alkaline battery is needed ( not included)<br> > bucket not included in the package<br> <p>package contents:<br> > 1 smart controller (pump included)(the pump connected to the controller is 30cm)<br> > 1x10m vinyl tube<br> > 10 stainless steel spring pegs <br><p> important note:<br> there is a small hole on each pipe as below photo, this is a useful hole we need for the good function of this system.<br><p> when hose is placed lower than pump, then pressure at pump side is higher than pressure at hose side. if without this hole, when pump stop working, due to air pressure difference, water will still go from bucket to end hose.