Westek SLC6CFL 100W Programmable Screw-In Light Control, White
Review by James J. Smith : Works well when used with timer

I purchased this item after reading the negative reviews, so I was prepared for the worst. The reason I bought it was that it was the only device of it's kind (after lots of searching) that worked with CFL lightbulbs. I bought two of these for the lights in front of my building and it works fine with the timer turned on (for 8 hours). The CFL bulbs I'm using shine at their normal brightness. Out of curiosity I tried it in the default dusk-till-dawn mode, and like other reviewers noted, the light control has trouble knowing when to turn off. One of the lights did turn off on it's own, but only because the sun was shining directly on it. The other light stayed on all day. Another thing to mention is that when you flip the light switch off then on, or have a power outage, the light control resets back to the default mode. So if you leave it in a timed mode and notice one day that the light stays on, double-check that the timer wasn't reset. I've had these two light controls for a few months in 8 hour mode and they work great. I also bought a plastic cover that goes over the light switch so no one accidentally switches the light off and it works great. 12 each: Ace Switch Guard (3017746)