I'm wondering where I can get a residential 3-way compatible switch with occupancy sensor that will be compatible with CF bulbs? 

What do I need to look for under the "Load Rating" on the sensor - is "Electronic Ballast" the same as being compatible with a CF bulb?

Thanks

http://www.wattstopper.com/products/productline_list.html?category=4&type=Residential

Above is a link to a cool product site called the wattstopper - I put one of these in my bathroom with CF bulbs and it works great - but you pay more for it. The typical sensor at Sears cost 19 buck but didn't fully shut off the light. This was about 50 bucks - It is awesome though - The sensor works great - you can program any time delay you like - you can set it to auto on and auto off OR manual on and auto off (which I like and use) - the one I bought (the RS-250) is for single pole only but they make other models that work for three way switches - but I am not sure if in that case you need 2 of them -

by the way - did you mean 3 lighting levels (low med and high) or 3 switches in the room? I was assuming you meant the latter. In which case I assume you would need TWO of these bad boys in which case the price is even more of an issue.

Anyway the only problem was that you can't buy directly from the website - you have to ask them who their local distributor is and call them.

Hope this helps

Todd

http://www.wattstopper.com/getdoc/1976/Resi_PSG.pdf

I think the model you are looking for is the RH-200 on page 18 of this brochure

Todd