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Customer Reviews
One Great Timer 
2005-09-14
I tried several other timers and three years ago bought 2 of these units and have had zero trouble with them. The 9 volt battery went over two full years. I replaced the batteries this year, but they were still good. Very easy to use, and a wonderful product. Don't fall for any other timer for your yard. Buy this one.
Gardena 31805 
2005-08-04
I have had two of these for over eight (8) years and they are still going strong. Tried others, but returned them all and replaced them with the Gardena. I have currently 10 of them on the ranch with no problems
a winner 
2003-01-12
I have 8 timers working on our property and I am starting to convert to Gardena T-1030 for replacement. I have one working now and it has been functioning for close to a year.
Down here in the tropics, a well designed and constructed piece of equipment is importand to withstand the UV rays and the weather. This product fits that requirement.
OK, but pricey for what you get 
2002-04-06
I own about 20 of the 31805-4 and 31820-4 Gardena timers. All of them have worked for at least 12 months, but many have failed within 24 months. I don't like having to buy more of them, but there's really nothing else available. One additional "problem" with the 31820-4 is that when you choose longer watering times you must also choose longer periods between waterings and when you choose shorter watering times you must also choose shorter periods between waterings--in other words you can't choose short waterings with long periods between.
no leaks 
2000-07-27
I had tried to save a little money and bought another timmer... well it leaked so badly in the guts of the timmer.. not the connections, that I had to return it and then I bought the Gardena 31805-4 well... no leaks and everything is now watered through the timmer! Could have saved alot of time if I had just bought the Gardena first. A very happy customer!