The Senso Timer ST6 eco!ogic waters by monitoring soil moisture and according to needs. The sensor included in the package measures the moisture in the soil and transmits the results to the Senso Timer. The desired moisture can be set at 5 levels. If the moisture falls below the desired level, watering starts automatically at a preset time. The removable panel and the 5 operating buttons make programming very easy. Up to 2 waterings per day can be programmed (maximum watering duration: 90 minutes). Thanks to the ecologic function, watering can be delayed from 1 to 7 days. Manual watering can be done at any time you wish. The watering schedule can be interrupted for the next 24 hours with the press of a button. The tap connector and pre-filter are included in the package. It requires a 9-volt battery which is not included in the package.