Yes...for sure an azz saver...took up my slack this week with another missed water...my plants on avg this run use about a 1/2 gal each per 24 hr...my drippers are 1gal per hr...so I have my timer set to 30min on,which gives me the 1/2 gal needed per day...I visit at least every 48 hrs and manually feed my teas and supplements, as if I had no "Watchdog" set-up... this thing has a 24 hr rain delay also...I turn it on when I leave after my scheduled feedings, and after 48hrs pass, and I don't return to water/feed for what-ever reason, it will come on and water 1/2 gal to each pot, per day, til I return...days...weeks...etc...saved my azz so many times...and if I make my scheduled time ,I just turn it off before it's programmed on time to stop it's function...You'll never regret the time you spend here to understand and use this simple little set-up...it will work solid and accurate every time as you have it programmed without a glitch...I also think 1/2 gal per day is better for plants, much more than 1 gal every 2 days in the same size pot...stops over-drying of your soil between waterings...and with these pressure compensated drippers, it waters very slow, a single drop at a time, making for a very even watering with no dry spots...anybody growing in soil should use this...it's cheap insurance...B