Gardena Universal Water Timer with Hose Connector - Automatic Irrigation System for Lawns, Gardens & Outdoor Plants | Easy Setup & Durable Design

I've tried 4 different water timers over 19 years. This is the best. I set 2 of its 3 open/close times. The first time goes off about 5am. At 7am, as I go to work, I move the water sprinkler to another area. I repeat this routine most summer days. You can leave each of the 3 times set but tell the device to either activate on inactivate that time. You can activate watering immediately manually and turn the knob for the number of watering minutes -- much better than another timer that always ran for 15 minutes. I only have trouble getting accustomed to how I should reconnect the two halves after opening the device to change the battery -- but I only do that once a year in Spring. I bought 4 off these 2 years ago.