Sunco LED PAR30 Dusk to Dawn Light Bulb for Outside Porch, Patio, Backyard, 11W=75W, 850 LM, Selectable CCT 2700K/3000K/4000K/5000K, Non-Dimmable, Photocell Sensor, UL 4 Pack

I bought these based on reading reviews which said these bulbs would work in an outdoor recessed can light fixture that was controlled by a 3-way switch. I received them yesterday and installed them in my outside patio recessed can light fixtures. They came on initially when I threw the switch and went off in seconds because it was daytime. At dusk I checked and they were on. I rechecked periodically during the evening/night and they were always on. I had been concerned because of the recessed can application but that was not a problem at all; they were on steadily all night. I checked in the morning and they had gone off, presumably at dawn.A word of description, my recessed cans have a dark interior so there is minimal reflective light within the can itself. The presence of a 3-way switch was irrelevant.I can't address longevity but these bulbs work great. Thank you to all reviewers for the honest opinions and product information!

so far works great. These go in fixtures on each side of the garage in the backyard. The sensor seems to work really well.It comes on when it starts getting dark and as the backyard faces the east they go off as soon as sun comes up. The light is better than when I was using regular bulbs, a lot brighter. I have app 1/2 acre in backyard and the lights shine halfway across yard.

Looking for solutions to security lighting for my yard and came across these bulbs with built in sensors which is an absolutely phenomenal idea because it's so much easier to replace a bulb than a light fixture! I have a dusk2dawn sensor light fixture that's gone bad so that will require a complete replacement. But my home already had flood lights on all 4 corners with motion sensors though I wasn't utilizing them continuously. Anyhow these flood lights are actually ancient, probably 18+ yrs old at least, they have a metal housing but the interior part where the bulbs screw in are in very good condition as the lights are tucked under the eave of the house. I took out the old fashioned high wattage flood light bulbs and put in these new Sunco bulbs and WOW the bulbs work perfectly and have not failed to light or turn off as expected. One of my light fixtures has a deeper recess so I thought maybe those bulbs wouldn't get enough light but the bulbs have operated properly so far. I bought the 3000k and they are VERY bright! I'm planning on getting the lower lumen for the other two fixtures just because the 3000k are really that bright and I'd like the light more mellow. I think it depends on the size of your yard & proximity of your neighbors on the brightness you use. My yard is a standard 75x100 lot in my community so not really a big property. I think the 3000k can work for a considerably larger area than what I have. Another plus about these bulbs is that they don't get hot! You can touch them while on and they don't burn you like the out dated flood lights that will burn your skin off. I can't rate for longevity because I just got the bulbs a few days ago but I will say I'm absolutely giddy that I don't have to pay an electrician to come out and fix my lights! It's great too that the bulbs have a standard base that will basically fit in most common type sockets. Love it! Will be buying more.....Oh and a tip I learned in this process: cooking oil works great to lubricate & clean off outside grime; it doesn't smell and is non-toxic and it revitalizes old metal flood light cams! I didn't use it inside the fixture of course but I used it to clean off the outside and amazingly it deepened the color, hid a bit of rust, so the fixtures look like they got a new paint job. Pretty cool and low cost. Happy lighting :-)

Very nice bulbs however they are not dimmable. Flickered endlessly with my LED compatible dimmer switch. The specification pdf states this bulb is not dimmable. The product description states that it is so beware. I installed a normal switch and the bulbs work perfectly.

They work as expected. Was concerned they would be a problem with a motiondetector fixture, but they work fine

I bought these hoping that the built-in photocell would function correctly when installed in a recessed fixture. I was very pleased to find that they worked perfectly. I've seen that there were some reviewers that said their lights failed prematurely. I haven't had these long enough to know, but I'm hoping that they last for a long time to come.

Good value. Arrived when promised

Excellent replacement bulbs for outside flood lights. They are very bright and work, dusk to dawn.