are these lights instant on?
375964
They come on quickly but, like lots of other fluorescents, take a few minutes to get up to full intensity. I would say they are a bit faster then some other bulbs I bought in getting to full brightness .
375965
The same as a tube flourescent, almost instant but maybe less than a tenth of a second delay. They last and last and last.
375966
We've had them for a while now with no hiccups. They turn on without any flashing. Like all CFLs they take a few seconds to reach max brightness but no big deal.
375967
they do take a few seconds to full brightness..great for the purpose i needed..
375968
Just like someone else mentioned, they come on almost instantly (there's a fraction of a second delay), but it does take maybe 10 seconds or so before they reach their maximum brightness. The color of the light is definitely closer to that of an incandescent bulb than a lot of other fluorescents, but is still not exactly like the light that you'd get from an incandescent bulb.
375969
As much as CFLs can be, yes. It isn't at full brightness right away, but it warms up quickly.
375970
They're faster than most; instant on and full brightness in about 10 seconds. I use them for many purposes.
375971
No. But they don't seem to take as long to "brighten up" as many other cfls.
1867123
No they don't. However, due to some kind of wire glitch my lights will start steady on but after about two hours they start blinking/flashing and there's no way to fix it. I've had mine for six months and it charges during the day and lights up every night. Other than the blinking it works consistently.
732482
Yes, they are lighted. You just need to hook up a 12v power source for the lights to work.
937890
No they are on one circuit, but it is a very dim and relaxing light. No brighter than the light from my alarm clock. Hope that helps.
1303493
I have about 15 in operation and they take from 1/2 to 2 seconds to come on. None are instant on.
1468862
Yes, these do turn on when dark approaches. And turn off after about 6 hrs. They are so comforting.
2023307
they come on instantly, not like compact fluorescent that need about 2 minutes to come to full power
778248
I'm no electrician but I would presume so if they are specifically noted as "dimmable." I finally installed the fixture and I like it very much. Though it is only about a week or so up and running, so who really knows.
1928221
No, just tested by turning breaker off to these lights. When I turned breaker back on the lights had to be turned on manually. As Dave states however they came back on at the dim setting I had previously set them to.
1859175
The lights have an on/off switch. It's not like a off camera flash. So they're constantly on.
1069162
Yes just turn them on the day before at the time you want them to come on. I have had mine on every night for 30 days. They are not as bright as real flame but a nice mood light
637066
Not that I know of although they can be programmed to turn on when you come into the room. They are pretty cool bulbs!
2023308
They come on as instantly as any other LED I have seen. Not like a halogen where there is typically a slight delay.
2020445
Yes, they will turn on at lowest light level. I've had trouble with certain brands of wall-switch dimmers. Some dimmer switches cause the lights to flash (when dimmed) for about 1 second (right after you turn the light on.) Other brands of wall-mounted dimmer switches work perfectly.
801210
Yes, they only go on when the light is quite dim. It doesn't have to be totally dark. I was skeptical at first, these are surprisingly useful. I just ordered a second set for a different location in our house.
1163276
No, they must be connected to a switch. The switch could be automatic in the sense of on at dark and off at light. But most of the time these work best to augment floor or stair steps light.
1823957
They are instant on I believe ( I'm using a dimmer ) , I wouldn't recommend buying these, I have replaced them few times since they burn so fast