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2. Holiday lighting technology - Wikipedia

   en.wikipedia.org/wiki/Holiday_lighting_technology

   Outdoor-only bulbs are designated C 9 + 1 ⁄ 4 (1 + 5 ⁄ 32 in, or 29 mm), and have a similar blunt shape as the C 7 + 1 ⁄ 2, but use an E17 "intermediate" base. Some modern versions of these strings are now listed for indoor and outdoor use. These bulbs are rated at about seven watts each, and are available in a globe shape, designated G40 ...

3. Passive infrared sensor - Wikipedia

   en.wikipedia.org/wiki/Passive_infrared_sensor

   A PIR motion detector used to control an outdoor, automatic light. A camera trap with PIR motion detector. An indoor light switch equipped with PIR-based occupancy sensor [1] A PIR-based motion detector is used to sense movement of people, animals, or other objects.

4. Occupancy sensor - Wikipedia

   en.wikipedia.org/wiki/Occupancy_sensor

   Occupancy sensor types include: PIR sensors, which work on heat difference detection, measuring infrared radiation.Inside the device is a pyroelectric sensor which can detect the sudden presence of objects (such as humans) who radiate a temperature different from the temperature of the background, such as the room temperature of a wall.

5. Light fixture - Wikipedia

   en.wikipedia.org/wiki/Light_fixture

   A decorative outdoor lamp at Leeds Town Hall A garden solar lamp is an example of landscape lighting. Outdoor lighting and landscape lighting – used to illuminate walkways, parking lots, roadways, building exteriors and architectural details, gardens, and parks. Outdoor light fixtures can also include forms similar to indoor lighting, such as ...

6. Christmas lights - Wikipedia

   en.wikipedia.org/wiki/Christmas_lights

   However, if there are multiple bulb failures or a shunt is bad, the string can still fail. There are two basic ways to troubleshoot this: a one by one replacement with a known good bulb, or by using a test light to find out where the voltage gets interrupted. One example made specifically for Christmas lights is the LightKeeper Pro.

7. Denver: Where outdoor Christmas lighting tradition began - AOL

   www.aol.com/news/2014-12-09-denver-where-outdoor...

   (KDVR) DENVER - As long ago as 1907, when merchants put green and red bulbs in street lights along 16th Street, Denver has been known for outdoor holiday flair. But in 1914 when D. D. Sturgeon ...