It does well what it is supposed to do. However, to be more useful for generalpurposes, it lacks (1) a clock, (2) multiple operations in a day. First isvery much needed if one wants to start the timer, say, at 3am: One has toget up and set it up to work properly. Second, most timers have multipleon/off times that can be programmed within a day.But the specifications of this timer is clear and it does well what itpromises. Price is also reasonable.Works great. This is my second timer from Intermatic. The first one is the predecessor of this model, which has lasted through 7 years of winter use. I am using both timers to control 1/2hp to 1hp electric de-icer motors which keep my lagoon from freezing during the winter months. Both devices are exposed to winter eliminates from November through March.Waco carried other brands so I purchased some other brand and it was terrible. So I had to get on the internet and find theHBH61RC digital outdoor timer photo control. I ordered several of these and they are wonderful. Thanks for carrying them.timer fails when used on a bug zapper as when the unit draws more watts through it during a medium usage on the light the timer will shut down ,if using for a bug zapper pass on this one ,by the way i was using it on an acre and a half bug lightI've been using this to control my yard lights for quite a while now. It works great and it was much cheaper than buying a new transformer for the lights.Works nicely for my PurposeAs long as you are sure that this timer does what you are looking to do, you can't go wrong. This is a high-quality product.I ran a small aquaponics setup for years and found this was the only timer that lasted. The others got wet. Got too hot. Some just stopped working.It is not a clock based timer but an interval timer based on dusk ir dawn. If you want something to go on twice a day or more or come on and go off at certajn hours this us not the timer.But if you want a bug light to go on at dark and off 3 hours later this will work. Well. I have 6 off them in my yard and i have never had one break. Or stop working.