1 of 1 people found the following review helpful
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This review is from: Zoo Med AquaSun Aquarium Controller Timer & Power Strip (Misc.)
I've had the timer set up for about 2 weeks now. Haven't had any problems with pins popping up or noises. There is no noise coming from this unit at all. one side stays on all the time,the other side is activated by the timer.. This little gadget simplified my fish tank, might have to get another one for my turtle tank..