When I went to buy this there was no feedback other than the dimmer not working. The most important thing is to give it time. Run a test during the initial setup. Once this is complete, move the switch to the length of time you wish to activate (10 hours, 12 hours or 14 hours). The moment you turn it out of the test, the light goes out. This is the marker for the timer. This is the part where you have to be patient. It takes about 20-30 minutes to regain full power. At this time, it will be turned on every day. If you turn it on for a timer, it will stay on for that many hours. My heat lamp is set to turn on after the lamp controller reaches full output and turn off when it's about to dim. It works great for controlling my bearded dragon's sleep/wake cycle. The heat subsides and she goes to bed while the lights go out. The light comes on and she wakes up, then the heat lamp comes on and she turns tan. This is a phenomenal product and I must repeat, give it time. The only reason I gave it a 4/5 is because I want it to be darker than it was before it was turned off. The intervals of it getting darker are noticeable, but I want it to get darker before it fades away.
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