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Flameless candles are an electronic alternative to traditional wick candles. They are typically utilized as aesthetic lighting devices and come in a variety of shapes, colors and sizes. Because flameless candles are illuminated by a small light bulb, rather than an open flame, they pose less threat as fire hazards and do not melt or lose their form over time.
As a decorative element, the design of a flameless candle is relatively versatile. The body or "housing" of the device is commonly cylindrical, containing a battery pack and an often flame shaped LED light that rests at the top of the candle. Many manufactures use LED lights with an irregular twinkling or flicker effect to simulate the calming glow of an open flame. The body of a flameless candle can likewise be made of wax to enhance its resemblance to traditional candles. Because LED lights do not put out as much heat as a live flame, wax based flameless candles do not melt but, rather, maintain their original shape and size for future use.
Some flameless candles are scented, serving as air fresheners as well as lighting devices. Others, designed specifically for outdoor use, incorporate features including integrated insect repellent. As the sun sets, an ambient light sensor, housed in the body of the candle, triggers a small fan near a fragrance compartment. Geranial or other repellents are then released. Additional features may include remote control light switches, integrated timers and air treatment apparatus.
Flameless candles are designed to eliminate the need for an open flame, thus, reducing their potential as fire hazards. Nonetheless, the bulbs inside some flameless candles may heat up significantly. In a pediatric study conducted in 2013, it is suggested that flameless candles are a minor cause of battery related injuries in children. Seventy-seven percent of batteries ingested by children were identified as having come from flameless candles.
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