A: This bulb is manufactured in China
A: It should come on automatically at dusk and go off at dawn.
A: This bulb has a photosensor that detects light so as long as the fixture that the bulb is installed in has power, the bulb will turn off automatically when it detects daylight and turn on at night when sun goes down.
A: Yes. On at dusk, off at dawn.
A: I'm not sure I understand your question, but as long as the switch is on, the bulb will light when it gets dark and shut off at dusk. You should always leave the switch on. I hope this helps.
A: Bulb stays on until light level reaches a certain intensity. The sensor then switches the light off during daylight. I have had mine installed for a couple years now. Light stays on all night and off all day.
A: Yes it will turn on at dusk. I just love coming home to a lighted porch. They last a long time. The last bulb I purchased lasted a little over 5 years. Worth the money.
A: In cold winters of Northern USA bulb will not operate properly or will not lit. It is not advisable to use an open lamp without a light fixture as it may break. For temperature range go to Phillips site.
A: This bulb can be used in open fixtures, but it should not be used in an application where it will be directly exposed to water. This bulb is rated for use in temperatures between -4 degrees and 113 degrees Fahrenheit.
A: Yes. I have ours in a fixture that has an open bottom, which I have had there for the last 2-3 years. It has worked great!
A: We use this on our deck and it works fine during winter. Not sure about the kind of enclosure you refer to, but ours has a glass cover from the top so that rain won't get to the bulb.
A: I wouldn't use this style of bulb, LED or not, in an outdoor fixture without some sort of weather protection. It's not the bulb that's at risk, it's the fixture itself. If water gets into the socket that can't be good for the fixture.
A: Yes, I have had mine for several years, I live in Cleveland, Ohio (read that as rough winters) and it has worked perfectly.
A: Mine are in coach light fixtures. Not exoposed to the weather. The lights have been in use for over two years. I wouldn't recommend exposing them to the weather. Please check with the manufacturer.
A: I am not sure. I used the bulbs on my porch light for our vacation home at myrtle Beach, it is very reliable lighting for my purpose, never tried to use it with a dimmer.
A: No - this bulb is non-dimmable and must be used with a standard on/off switch
A: No they are not dimmable. They are however the greatest bulbs ever. It is so nice to come home to a well lit exterior. Definitely worth the price, love them.
A: As far as know they are not. They are made to turn on at dark and off when light and they do that very well.
A: They are not dimmable.