Features The unit is simply connected to the tap & can easily be operated using the large rotary element. The operation of a sprinkler or drip irrigation system can be initiated manually. The watering duration of between 5 & 120 min is set on the water timer. After the pre-set time has expired, the water flow will stop automatically. No batteries are required for operation. Product DescriptionThe Gardena water timer automatically switches off your garden irrigation. The unit is simply connected to the tap & can easily be operated using the large rotary element. The operation of a sprinkler or drip irrigation system can be initiated manually. The watering duration of between 5 & 120 Min is set on the water timer. After the pre-set time has expired, the water flow will stop automatically. No batteries are required for operation.