I original installed and could hear a humming noise from the dimmer went set between 10%-70%, but noise went away once over that. I had the old bulbs in there but still under the recommended wattage. I bought Sunco Dimmable BR30 LED 11W (65W) bulbs and once they were installed the humming noise went completely away at any dimming level. The Sunco lights on the box itself show what dimmers to use (around 6). I bought this one and glad I did. Only reason I gave a 4 star for installation was because the thickness of the switch is 1.5-2 inches so it was very difficult to get in the wall box (very tight no space) on a 2 gang wall outlet. Took many tries to finally get it right. Other than that is works great!
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