The 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.  Timer is Rain Proof and UV Protected for long lasting use.