Beware of non-incandescent usage
351896
These switches are NOT compatible with dimmable LEDs such as the CREE or EcoSmart 6" recessed can replacements. These switches cannot hold the voltage steady with the low current draw of LED lights and will cause the lights to flicker, even at 100% brightness. If you have 4 or more LEDs on a single circuit, they may be steady depending on brands.

GE/Jasco will not accept this as a faulty dimming mechanism and will not repair or replace the devices. With the new US energy laws restricting incandescent bulb usage, if you purchase these switches now for your home and replace your lights with LEDs or any low wattage device, you will need to purchase new dimming switches.

Investigate the higher cost "Electronic Low Voltage" (ELV) dimmers on the market if you are going green.
1831213
Don't make the mistake I made - LOOK before you use.  I specifically ordered WARM WHITE led's to match the rest of the Christmas lights being used to decorate the outside of our home.  Currently I have both, LED and incandescent mesh light on various bushes and when viewed from the street you can not tell a color difference.  However, when these lights were installed to outline the house (gutters, roof peaks, etc.) they are NO WHERE EVEN CLOSE to what I consider WARM WHITE.  Needless to say I was very disappointed when I saw it.  Partly my fault since I wasn't expecting this problem and I did not insist on personally checking if there was a color difference before they were installed.  So be pre-warned, if you are ordering these to match warm colored lights that you are already using, these will probably not fit the bill.  Even if they are advertised as WARM WHITE.  They have the traditional very cool, very bright hue to them.  Maybe not quite as "blueish" as the original LED's used to be, but close.

Other than the mis-advertised color (as I see it,) there doesn't seem to be any other negative issues with the lights.  How well they will stand up to the elements by leaving them attached to the house all year long remains to be seen.  If I remember, I'll add a comment next Christmas season.
4541438
Generally LEDs use less power and are brighter than incandescent bulbs, this one is not. It uses 0.5 watt instead of 5w which is a great energy saver but its less bright. It's okay for my application but I was hoping for less wattage and more light just like most other LED applications.
4454820
I have recently installed several of these in my house. These 'no-neutral' timer switches work by continually passing a tiny amount of current through the light source, in order to complete the circuit and power the timer. This is why they can only be used with incandescent lights. CFLs and some other bulb types do not permit this because of the way they work.

I suspect they are more reliable than many posters here realize. One of the problems that arises with them is that if the light or lights on the circuit burn out, the current to the timer is interrupted, making the timer appear to fail because the screen goes blank and the timer is unresponsive.

If that happens to you, be sure that the bulb(s) on the circuit are all good before suspecting a faulty timer switch. Most of the time, it will likely be the bulb.
1146240
I liked them enough that I tried to order a second set of 4 bulbs, but they were not currently available from Amazon. I am using them in a great room with fairly high cathedral ceiling. Upside: at full power, the bulbs appear brighter than the original incandescent bulbs they replaced -- good for our weekly bridge table.  Downside (perhaps common to all LED bulbs): when dimmed to maximum extent the bulbs are significantly brighter than the incandescent bulbs they replaced -- bad if you want dim lighting for atmosphere. I will note that I first tried Great Eagle 4000K bulbs but the light was too harsh for the location (not surprising - but I was trying for maximum brightness because of height of ceiling. The 2700K bulbs match existing bulbs fairly closely except at noted above. I am using them with the original dimmer switch -- 3 original incandescent bulbs on same switch. The dimmer works fine but no way to know if I am shortening the life of the LED bulbs by not installing dimmer made for LED bulbs.
1452015
Well made but pis of base is inaccurate showing bulbs will be near metal base when in fact there is reflective insulation layer between base and bulbs, space is tight with bulbs installed; also seller represents that multiple bulb types can be used which is why I purchased it to avoid having to use the low watt CFL bulbs; the manufacture's included instructions indicate bulbs to be used are two 13 watt CFL bulbs and no other bulbs are listed; now it is installed I do not feel comfortable using two 40 or 60 watt incandescent bulbs as I had planned; now will be required to stay with manufacture's recommendations to avoid any electrical or heat issues that may be created by using bulbs described; seller should change listing to accurately reflect the bulbs this light was designed to use; I am troubled by this misinformation.
295557
Picked up 3 of these for the inside of my 3 car garage. Nice bright, white light at 14 watts a piece, are you kidding me? Sweet! I replaced my 26 Watt CFLs that I used for garage downlighting. I cannot tolerate CFLs. They are not for cold climates. They take too long to warm up and are hazordous to the enviornment (mercury) that they were designed to protect.

2 reasons I knocked one star off my rating of these LED's:

1-Not US made, but what is these days I guess?

2-Although bright they cast more downward than my so beloved CFLs. Rememebr the CFL's have to warm up however! But this is relevant if you have garage post lights. It's not a huge deal, but I noticed a difference. I will probably replace those CFLs on the garage at some point anyway. I am tired of recycling hazordous CFLs. I really question the "long life" spans reported on the packages of CFL's.

If you are looking to replace those 26 Watt CFLs (100 watt equiv), or 100 watt incad - go for it! Yes, this bulb is larger than a standard 100 watt incad, but it's not as ginormous as some folks are claiming. I was really expecting bulbs as large as my head when my shipment arrived today. They are probably twice the girth of a standard incad.
3423715
The fixtures (I ordered 2) themselves are very nice and look great in my entryway foyer.  The description of these lights say "LED bulbs" in one place and "Incandescent" in another - so I assumed it would be one or the other - WRONG.  Turned out to be CFL bulbs - which I hate - and they hum if you try to use a dimmer -  that were included.  They are the CU24 type bulb - they have a weird connector base with 2 small prongs that twist and lock into the socket in the fixture.  Replacing with compatible LED bulbs would be almost $30.00 per light - almost half the cost of the fixture!  Very disappointing that the description was incorrect & misleading - and too much of a hassle to return and start the search over again.
3202504
I was really excited about this system, and used an Amazon gift card someone gave me to buy it. To be clear, it works as described, and the setup is pretty easy. But the thing that was such a BUMMER is that I didn't realize these lights cast a *really* white light. I would never use such a bright white light on indoor bulbs, and frankly don't know why Philips even sells this bulb for indoor, residential use. Somehow, I must have watched a video about the light settings for the Ambiance and thought it applied to these. While you can adjust the brightness, there is zero warmth for these bulbs. So if you are even moderately particular about not having cool white light bulbs in your lamps, chose carefully and get the Ambiance. To an extent, I feel like I wasted money on these because I really don't feel they are usable indoors.
1227913
Be careful when you buy an item like this. It's important to buy the model that is designed for compact fluorescent bulbs. This particular model is designed for incandescent bulbs. As the sun hits the light sensor, it begins to flicker and  to dim and eventually turns off by mid-day. The sensor is essentially behaving like a dimmer. Sometimes light from the bulb itself will reflect into the light sensor and result in dimming of the bulb.

Choose a different brand or model that is designed to be used with compact fluorescent lightbulbs. Because electricity through the sensor flows in an all or nothing fashion, the bulb will not appear to be dimmed. Like all of these automatic dawn to dusk controllers, any light that reflects into the sensor can still affect the function of the device; in my case it was causing intermittent blinking or random on/off behavior.

Many factors affect the function of these devices. Sometimes it's the shape and color of the light fixture. Sometimes it's the length of the light bulb or intensity of the bulb. I also don't like the appearance of the lightbulb after it is lengthened by this device. My solution was to buy a different model/brand (from a big box store) designed for compact fluorescent bulbs. I wrote a review of a similar product and I find it works when I use short LED bulbs. Your mileage will vary.
1250374
I know this isn't noted as a dimmable light so I guess I should take that into consideration. with that being said I'm happy with the normal brightness although I think my normal bulb made it easier to see the stove top and what I was cooking. But I'm ok with how it is I guess.

Do not buy this with the intention of using the lower night light setting. It is beyond dim and not with having off even if all the lights are off.
1282956
I bought a 12-watt and a 19-watt to use with some X-10 home automation devices -- a wall switch and a plug-in module. In both cases, these LED bulbs flicker and may perhaps be damaged if you leave the lamp on and the device off, which is the normal configuration for letting a timer run your lights.

I'm still searching for long-life, efficient bulbs to use in the X-10 system. CFs are even worse as far as flickering when the x-10 device is in the off position.

But, if I were reviewing these for use in a regular lamp, not plugged into an x-10 module, they would get five stars. I only bought two as an experiment and they are both being used in non-X-10 lamps now, while my search continues.

For others buying these for non-X-10 use, be sure you get the right color temperature. These bulbs, at 6000 K, are very "cold" white light. which is fine for where I'm using them, but would make your living room look like a CIA interrogation chamber [grin]. I'll try some "warmer" ones next.

-dan

EDIT: I got a very nice message from HitLights asking about my one-star rating and how they could turn me into a happier customer. I explained that I am happy with the bulbs if I use them in standard lamps, but that I wish they sold LED bulbs which work with X-10 home automation.

UPDATE: HitLights recommended a different model which they said works with X-10. They arrived today and work fine. Here's a link:

http://www.amazon.com/dp/B006R62L4Y/ref=pe_175190_21431760_M3T1_ST1_dp_2
3180102
Don't use a led bulb,they don't get warm,regular incandescent bulb,needs just a little heat
3930222
I had high hopes for these bulbs. I have 8-bulb fixtures in my bathrooms and was hoping to get rid of the incandescent bulbs that seem to constantly need replacement, and maybe save a penny or two in the process. I had some worries about going with the "natural" light, so I checked the manufacturer's website.

It lists their color temperature as 4500 kelvin, which should actually be a shade warmer than natural light, so I decided to give them a try. BIG mistake. (Well, not that big...I at least had the restraint to limit my purchase to two bulbs.)

They impart a definite green cast to everything. I thought at first that it might just be my eyes playing tricks on me, so I got my camera, set its white balance for sunlight, and took a snap. Sure enough: green.

I'm not sure whether they deserve a 2 or 3 star rating, but they appear to be well made, run very cool and are just about as bright as the 25w incandescents they're replacing. Other than the nasty fluorescentish color, they're really a decent product. The box says that they're rated at 35,000 (!) hours, so with any luck they'll still be bugging me ten years from now. In 2021, I'll be sure to update my review with relevant details.

If you (like me) have been waiting for a natural-light replacement for small bulbs, I don't think this is what you're looking for. It's possible the "warm white" bulb would be better, but I was really hoping to get away from the yellowish incandescent end of the spectrum.

The search goes on!
3680749
Very, very nice -- but the included halogen bulbs get VERY hot, to the point that you could easily burn yourself if you try to adjust the light or switch. So if you are intending to use these beside the bed, swap with an LED bulb.
3896692
This review is being written 1/26/2014 for the Cree 9-Watt (60W) Daylight (5000K) LED Light Bulb, advertised by third party vendors and sold on the Amazon website.

Updated 10/19/2014

As pointed out by a couple of users, this bulb is rated for "damp" conditions only with a "damp" rated light fixture.  Most outdoor fixtures (porch lights, garage carriage lights, and the like) are "damp" rated, which means that they must be installed in a completed covered and weather protected environment (such as a covered porch).  Even most completely enclosed outdoor fixtures sold by the big box stores are only "damp" rated, and therefore are inappropriate to use with the Cree bulb unless in a completely covered and protected outdoor environment, which is unlikely for many home styles and uses.  While it's true that such "damp" rated fixtures are commonly installed in unprotected areas, evidently the Cree bulb is more sensitive to such environments compared to a standard incandescent bulb.  Be sure to follow the manufacturer's recommendations and only install in completely weather protected environments with a "damp" rated fixture.  Otherwise, the bulb may fail prematurely as in my experience.

For indoor use, these bulbs are fine.  However, if you like "soft white" color, you might pick the "warm white" version of this bulb.

The looks and form factor of the bulb are to my liking in general, not overly large compared to a standard incandescent bulb, and with a LED array that displays in a 360 degree circle, albeit with a dark spot on top of the bulb itself.  The light pattern is therefore not truly omnidirectional but rather close to it.
606202
These bulbs have very nice color and good light dispersal--some LED bulbs are very directional like a spot light when they claim to be a flood. Definotely not the case here.  HOWEVER: these bulbs flicker significantly when dimmed at all.  If you buy this and treat it as a non dimmable bulb you'll be happy, but they don't work as a dimmable bulb.  I tried several different bulbs and sizes from this manufacturer and they all had the same issue.  I'm not planning on returning them, I'll just use them in my fixtures that don't have a dimmer function.  I'll update this review if there are any long term issues.