LED flashlight donated some of these devices to the New York City police, who responded favorably to them.
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10 Facts About LED flashlight
2.
An LED flashlight has a longer battery life than an incandescent flashlight with comparable output.
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3.
LED flashlight lamps have different spectra of light compared to incandescent sources, and are made in several ranges of color temperature and color rendering index.
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4.
Since the LED has a long life compared to the usual life of a flashlight, very often it is permanently installed.
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5.
Less common type of LED flashlight uses a high-intensity discharge lamp as the light source.
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New York City6.
Certain accessories for a LED flashlight allow the color of the light to be altered or allow light to be dispersed differently.
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7.
Colored lenses placed over the end of the LED flashlight are used for signalling, for example, in railway yards.
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8.
Similar to the headlamp, an angle-head LED flashlight emits light perpendicular to the length of the battery tube; it can be clipped to a headband, belt, or webbing or set on a flat surface.
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9.
One type of mechanically powered LED flashlight has a winding crank and spring connected to a small electrical generator .
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10.
Some models of LED flashlight include an acceleration sensor to allow them to respond to shaking, or to select modes based on what direction the light is held when switched on.
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