Instruct: Classify the given Amazon review as either positive or negative.
Query: Great energy & frustration saver!

I turn my porch lights on each evening and off each morning. It began to be a pain when I would remember at lunch time that the porch lights were still on, or when realized I never turned them off when going to turn them on at night. Thankfully I use CFL bulbs.I installed this switch last week and it is awesome! No more remembering to turn the porch lights on & off. It installed easily, however, note that it will only work in a system that has a white 120v wire and 2 black wires. The two black wires were already attached to my existing light switch and I had to dig around in the electrical box a bit to find the big bundle of white wires to add this to. Setup was a breeze and I was up and going in about 15 minutes. I'm going to order more for other rooms!