The GARDENA Water Computer MasterControl is attached to the tap and controls the automatic irrigation of your garden, e.g. sprinklers, a drip irrigation system like the Micro-Drip-System, or the GARDENA Sprinklersystem. The programming of the watering times is easy: the operating unit with the large and clear display can be removed for easier programming. The large display explains with on-screen instuctions in ten selectable languages which programme steps are to be carried out in which sequence. With the large, easy-to-use rotary knob, the desired data can be quickly revised. Daily, up to six independent programmes or watering intervals with a duration each of one minute to 9 hours 59 minutes can be selected. Additional flexibility: the desired watering days are also freely selectable. In combination with the Automatic Water Distributor by GARDENA, up to six different connecting devices can be individually controlled. For water-saving operation, a GARDENA Rain Sensor or Soil Moisture Sensor can be connected. A purely sensor-controlled irrigation with the Soil Moisture Sensor is also possible. For operation of the GARDENA Water Computer MasterControl, a 9 V alkaline battery is required (not included). This ensures secure operation for about one year. The integrated battery level display indicates when the battery needs to be changed.