just for info (the site is in German, but you can see the brand of the timer). This one is a digital timer with intervals as low as 1 Sec. It works without batteries (the only battery is only to save the programs!) and you can program up to 8 different daily cycles. This is the one I have for my misting sytem and works very good:
Terrarientechnik - Lucky Reptile Pro Timer Lucky Reptile Pro Timer ENTZT005
Don't know in the USA, but here in Europe you can also find similar digital timers at big warehouse shopd (à la Home Depot) that do not use batteries at all...