Does not work with LED bulbs. It corroded within ...
929857
Does not work with LED bulbs. It corroded within a month and shorted the fuse. the contacts on the inside burned and I lost all my tail lights. Fast blinked when it did. DO NOT BUY! Wait until the LED has it included.
1198720
It wouldn't work with a compact fluorescent bulb, but did work with a 40-W incandescent. The programming instructions that came with the switch were poor and confusing - the instructions I downloaded from Intermatic's website were quite a bit better. It's been a hassle, but I would probably buy it again.

I used to be an electrical engineer with a background in computers. I know what you're thinking: that explains my problem with programming the thing. I should have had one of my grandkids do it.

One more issue - when the switch is mounted on the wall, it becomes almost impossible to read the top line of the LED display unless you stand on your head. For programming, I wound up loosening the lower mounting screw so I could tip the switch outwards, away from the wall, which allowed me to read the top line. But, again, if I'd used my 54-inch tall grandkid, he could have read the top line of the display.
3810624
Defective.  Bought 19 and 12 had at least one diode that was not functioning.  They are warranted for 2 years, so I sent an email to SZLCMG@163.com as specified requesting a refund.  Will update this review with their response.

So, it has been about 3 months and Sunmeg have not replied to multiple emails requesting warranty support.  If you order these for a renovation or new house build, make sure that you or your contractor test the bulbs WITHIN the required time frame for returns through Amazon.  Otherwise your support experience through Sunmeg directly may not be so fruitful.

I did more research into dimmable LED bulbs and have found that there are lots of "glitches" as the technology is somewhat new.  If you look at your LED-compatible dimmable switch, you will find a list of LED bulbs that have been tested and will work with that switch.  Additionally, the LED bulb manufacturer will provide a list of switches that will work with their bulbs.  You may have to visit their websites to gain access to this information.  If you use a bulb/switch combo that has not been "approved", you may find that the light flickers, strobes or flat out doesn't work.  Or you may find that it works just fine since the manufacturers have not had time/resources to test all bulb/switch combos.  Hopefully, this will become less of a problem as time passes and the technology improves.  Keep in mind that the dynamic range of the dimming for LED bulbs is currently not as good as it is for incandescent light bulbs.  LED bulbs don't dim to a low level of light.

One other point -- T10 bulbs come in different lengths.  Some T10 bulbs may be too long (or short) for your application.
413180
All of the bulbs in this order work as strobe lights - won't stay on steadily.  Tried in multiple lamps w/ same result. Same lamps work fine with other LED bulbs of this wattage/brightness -- so it isn't just the way the bulbs were being used.  Didn't test all upon arrival, so the problem didn't surface until I needed to use one.  Boxes of individual bulbs tells customers how to report a problem - but following that process was nothing but frustrating. No representation was made about resolution on the box that encourages the reporting of concerns - but the manufacturer/distributor had no interest in the issue even just as information to prevent the problem in future items or as an alert that perhaps there was a defective batch and they might anticipate complaints from customers who bought from the same batch.. They had no data or information about what could be causing the problem, nor any suggestions about what could be tried to solve the problem.
3314856
And one-star for me.  The listing plainly says not to use this for LED's.  But, I saw LED in the description and missed everything else.  I returned it after I saw it on printed on the box.  What's the difference?

A dimmer such as this is designed for the power draw consistent with regular lights.  LED's and CFL's draw much less power, so their circuit may or may not work.  Also, this dimmer lacks an adjuster to set the lower limit of the dimmer, which is a big deal for LED and CFL's so they don't just go out when you go to the dimmest setting.

So, this is more an informational review.  I can state that it was packaged well, and the instructions looked clear and easy to follow.  Just don't buy this for LED's or CFL's, like it already says in about 20 different places.
3378765
The metal base above the threads is wider than the threads or other bulbs.  This bulb would not screw into our light fixture which has faux candle holders.  We are able to use regular incandescent bulbs and other LED BULBS.
3576924
Besides buying this device I also replaced the bulbs to LED.
It turned out that not all dimmable LED will work with this device
4415150
Bought it originally to work with a Hunter remote controlled ceiling fan. Bulb did not light up. Tried it with another light fixture that had one of those touch dimmers. Didn't work either.
Finally used it just as a regular LED. Lumen number feels lower than an incandscent 60W bulb.
Prize of almost $10 was too high, given that mine did not work as planned. Too much hassle for me to return product.
2613222
The bulb socket is the worst part. Good connection cannot be maintained. You will spend a great deal of time on squeezing the flimsy copper part to make contact with the bulb, getting them all set up and operating. Then return in a short while to find that some of them are no longer lit.

Other components (considering that this is an inexpensive set) seemed to be acceptable. However, I chose not to continue in a state of frustration with constant fiddling with the bulb sockets. This lighting kit has been returned.

My advice to the shopper is to look for lights that have a ceramic-covered, plug-in style bulb connector
1393265
Just a note that these DO NOT work with LED lights.  Works great with every other type of flood, but not the LED's.
1861480
This bulb doesnt work properly with a dimmer (specifically one by Lutron). Unlike the very old LEDs I have and do work fine. This LED will not go off totally! All the other lights go off but this one glows and flickers! Major failure for me on this end! That I cant turn the bulb off completely is the reason for the 1 star. If anyone is interested in the measured SPD, heres what it looks like, measured using a Spectrophotometer.

Update: I may have been harsh with the 1 star review based on issues with my dimmers. But I think its very important for customers to know, IF they intend to use these bulbs with a dimmer, make sure they work! I received a number of emails from the company saying they would replace the bulb, take it back etc. Very accommodating. They ARE trying to stand behind the product. Since I moved the bulb to another room without a dimmer, it of course now turns off as it should. Now should the company attempt better compatibility with existing dimmers? Yes.

So Im giving them a 3 star review (3.5 if I could).
3646502
Luton documentation on this model indicates it should work with dimmable CFLs and LEDs. I have a dimmable LED bulb and it didn't get nearly to full brightness.
4733521
These are sold with advertisement claiming they are dimmable.  These lights are NOT dimmable and do not work properly.  I have a dimmer installed that is for LED and CFL bulbs and I had CFL bulbs in my light fixture prior to installing this horrific product.  The bulb looks great and the light it puts off is perfect but it will not work for my needs.  One of the nice things about the filament style bulbs is that they look amazing when on a dimmer and your able to control the amount of light in the room (NOT WITH THIS PRODUCT).  I am very disappointed in this product and I would not recommend it.  This is my first negative review on any product I have ever purchased from Amazon.  This shipping from China was very fast and the packaging was amazing.  I truly wish it was the product advertised (CRLight 4W Dimmable LED Filament Candle Light).

10/13/2015 Update - The seller was quick to reach out to me and attempted to resolve the matter quickly.  This is the first time I have ever had an issue with a purchase from Amazon and I am incredibly pleased with the outcome.  While the bulbs did not work for my use they would work perfectly in a lamp or chandelier with a typical on/off switch.  The bulb is nice looking and the candelabra base doesn't have the white trim on it like other led bulbs I have looked at in the big box stores.  I am changing my rating to a three star because the seller went above and beyond when handling my issue.
4639087
First problem, not a direct replacement for 886 bulb.  This has the locking pin for the connector on the flat "top" portion of the bulb, an 886 has the locking pins on the narrower sides.  Therefore they do not lock into the connector.  Second, they are much whiter of a light, but not bright at all.  Very disappointed in the light output.  If you are looking for the white appearance but do not care about actually seeing down the road, these will work for you.  Otherwise, stay away.
1492399
The adhesive back does not hold up the bulbs at all. Stuck them on and after an hour I found all pieces were hanging from the wiring not a single piece, whether a few inches or several feet was able to stick, I had to staple them on. Lastly these led look very blue, not white at all. Ended up just ripping them off and throwing them away after 2 weeks from setting them up.
4818641
Did not work for my application. Base was slightly too small. Even with bending fixture, could not make these work.

Other LED bulbs (also BA9s base), from a different seller, did work properly.
4165148
The data provided for these resistors on the description page is completely wrong. These resistors are NOT to be connected in SERIES with the LED replacement bulbs, but in PARALLEL with the LED replacement. The reason they MUST go in parallel is that the original incandescent bulbs draw much more current than the LEDs do. The flashers are looking for the heavier load that a regular lamp creates. The bulb causes a coil in the flasher to heat up and that breaks a contact in the flasher to turn the bulb on and off. Without the heavy current draw, the flasher cannot adequately heat up in order to operate. The resistor simulates the load of the original bulb. These resistors will get very hot and must be securely screwed directly to the sheet metal of the inside area on the vehicle body behind the tail lights. DO NOT FASTEN THEM TO ANYTHING PLASTIC!!  Getting very hot is normal.

Putting the resistor in SERIES with the +12v lead to the bulb will do nothing but reduce the current to the LED, but not enough to even show in intensity.  I work with LEDS of all types every day in my electronics business.