
This is great, you just need to set it for 2, 4 or 8 hours and turn it on when you want it to start, then it will run for as many hours at a time as the power stays on. I suppose it's no good if you have an unreliable diet. I've also tried the dusk-to-dawn bulb, but it needs to be in a place that gets plenty of light during the day. I like the timer better.

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