Decora 600-Watt Single-Pole/3-Way Universal Rocker Slide Dimmer, White/Light Almond

I’m going to say No on this. I did my entire home in Leviton Decora switches and outlets and never came across what you are describing. At least, I never saw one at Home Depot. That being said, a quick call to Leviton directly should provide the answer.

The indicator light has a switch underneath the plastic switch cover. When in the on position, the indicator light is on with the light switch off and off with the light switch on.

Yes I bought and I installed it.it was great product

The ability to use a dimmer is not necessarily related to the type of light fixture but rather to the type of bulb being used. If the bulb is labeled as being able to be dimmed than it should be no problem. Most of the older ncandescent bulbs and halogens were dimmable but fluorescent bulbs (CFL, tube) were often not. Please read the labels on the bulbs. LEDs can vary.

I'm not sure. I used 3 of them. 2 for hanging fixtures, the other for recessed lights in my kitchen. They were easy to install and work great. I'm somewhat uncertain because your trim is commercial. As long as they are not over 600 watts, they should be fine. You can always return them. If each of your lights is controlled by different switches, you'll need 2 dimmers. I hope this helps. Good luck.

Yes. Your present switches are presumably 3-way switches. You can replace one of these with this 3-way dimmer and it should work fine, assuming that all bulbs involved are “dimmable”.

Not sure that I understand the question. If you’re asking if it will fit in a 4” wide space, the answer is yes. If you’re asking if it will fit in a 4” deep wall space, the answer is yes. If you are trying to mount it in a 4” wide piece of trim, it will fit but, unless the trim is flat, the trim plate over the switch will obviously not be snug against the wall.

I would suspect that the answer is yes. You can’t dim fluorescent lightings but halogens should be fine as long as the total wattage of all the lights does not exceed the rating on the dimmer. I control six indoor incandescent flood lights off one of these 3-way switches.

If you are using dimmable LED lights and you have flickering when you try to dim lights, you need to increase minimum lighting level. See Installation Sheet Troubleshooting section and Programming Section. The selector switch has an optional programming mode. The programming mode option is used to change the factory settings for minimum light level. For example, the dimmer settings can be changed to eliminate any noticeable flicker or users can re-calibrate the pre-set to ensure the bulb starts at the lowest light level. The factory setting may be too low for your bulbs. It only took me 3 years to figure this out ;-)

I can not answer this 100%. Some light fixtures do not work properly with some LED bulbs with dimmer switch. I don't think the wattage is the issue. There is a special LED bulb that is suppose to work with dimmer switches but I am not sure this is the answer.