Bosmere Irrigatia Sol-C12 Solar Automatic Watering System for Water Barrels Works with your current water barrel to water your plants automatically with minimal supervision Uses solar power to detect the weather and alter watering according to the conditions Easy, Eco and Efficient  uses up to 90% less water than a hose Easy to install and set up; this unit will water up to 5 large hanging baskets or 12 3.8 gallon pots Kit includes: 1 x SMART Controller C12 with integrated pump, inlet filter, anti-siphon, 15m tube, 12 drippers, stakes, and tees