When people think about investing in smart bulbs for their home, they often only think of the most common A19 bulb with an E26 base, but you can get a smart bulb in pretty much any shape or size you need. Whether you need a small bulb for your bathroom or ceiling fan or a huge bulb to replace the floodlights in your backyard.
All light bulbs — incandescent, LED, and smart — are identified by a combination of a unique letter and number, called a light bulb code. The code starts with a letter (or letters), which indicates the shape or special feature of the bulb. Then, the number that follows the letter(s) represents the bulb’s diameter in eighths-of-an-inch.
A-shaped bulbs are the standard choice for households, so it’s the one people are most familiar with. But there are also B-shaped bulbs, often used in chandeliers and wall sconces, and Parabolic Aluminized Reflector (PAR) bulbs, the most common choice for floodlights and spotlights.
So if you’re looking to replace a certain bulb in your home that doesn’t like a standard A19 bulb, try unscrewing it and trying to find a letter/number combo written on it. Then, plug in that letter/number combo and “smart bulb” into your shopping site of choice, and start filtering through all your options!
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