Having just learned more about dimmers and why my bulbs keep blowing out, I would like to point out that these (at least the 600 watt models) are for incandescent bulbs - not CFLs or LEDs!
Bought these (4 of them) back in December. One thing that was never described and is not in the description this time is that the low-voltage ones have about 2 second delay when turned on. I was trying to return them back to Woot, but looks like customer service is just plain horrible. It took them 2 week to respond to my e-mail with pointless comments. Sent an response to them at least a week ago, so far nothing. Woot has degraded to the worst place to make purchases from and deal with. Never again at least until they fix this!!!
[QUOTE=confusedemmy, post:2, topic:409807]
Having just learned more about dimmers and why my bulbs keep blowing out, I would like to point out that these (at least the 600 watt models) are for incandescent bulbs - not CFLs or LEDs!
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CFL’s NO, but do work with LED’s; however the low watt model may provide a smoother dimming range for LED’s.
Pretty dissappointed in this sale. I would buy the low watt one for a fixture with LEDs. But you can buy a similar one from Home Depot for About the same price 18 vs. 15 after shipping. Only way this makes sense it to buy several, but I don’t need that many dimmers 
Leviton 6161-W 500-Watt Decora Brand Style 4 Level Dimmer, White
Eliminates guesswork: user selects one of four preset lighting levels (25%, 50%, 75%, 100%)
How do you turn it off (i.e. 0%)
[QUOTE=tcjokok, post:6, topic:409807]
Eliminates guesswork: user selects one of four preset lighting levels (25%, 50%, 75%, 100%)
How do you turn it off (i.e. 0%)
[/quote]
This, not to be that guy, but I was going to say technically it is one of FIVE preset levels (0%). If you can need to imagine me pushing up my glasses and adjusting my pocket protector when I say it, that is fine :).
My house is full of these dimmers. I’m trying to decide the timing of when I replace them all to allow me to use CFL or LED bulbs, but since many of them are the more expensive varieties - 2 way or remote control, that are $40-50 each, I don’t want to spend a lot to change them in rooms that are rarely used.