What are bi-pin and 4-pin bases, and what are they used for?

<a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/Bi-Pin/N-5yc1vZbmbuZ1z0tnc5?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">Bi-pin bases</a>, including the <a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/Miniature-Bi-Pin/N-5yc1vZbmbuZ1z21ms6?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">miniature</a> and <a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/Medium-Bi-Pin/N-5yc1vZbmbuZ1z21luf?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">medium bi-pin</a>, have two small pins that push into a socket commonly used for halogen or some LED bulbs in undercabinet lighting or desk lamps. <a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/4-Pin/N-5yc1vZbmbuZ1z21lyb?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">4-pin bases</a>, with their four pins, are often found in fluorescent and compact fluorescent (CFL) bulbs; they are designed for fixtures requiring a more secure connection and may need specific ballast compatibility.

I want to create a relaxing atmosphere at night. Is dimmable a feature I should look for, and how would I benefit from it?

Yes! <a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/Dimmable/N-5yc1vZbmbuZ1z0u4xv?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">Dimmable light bulbs</a> allow you to adjust the brightness level, creating the perfect ambiance and saving energy simultaneously, depending on your needs. It gives you more control over the lighting in your space, transitioning seamlessly from bright task lighting to a softer glow.

I want a light that can change from warm to cool throughout the day. Is that possible?

Yes, you can achieve this with <a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/Color-Changing/N-5yc1vZbmbuZ1z1whhv?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">color changing</a> or <a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/Adjustable-White/N-5yc1vZbmbuZ1z1whcp?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">adjustable white</a> light bulbs. These bulbs allow you to customize the color temperature, ranging from warm tones to cooler, brighter ones, letting you adjust the lighting to fit your mood or activity.

I want to add fun and personality to my patio. Are there colored light bulbs I could use?

Absolutely! <a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/Multi-Color/N-5yc1vZbmbuZ1z0v09i?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">Multi-color light bulbs</a> are perfect for adding vibrancy and a festive atmosphere to outdoor spaces, and you can even choose specific colors like <a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/Blue/N-5yc1vZbmbuZ1z0vbum?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">blue</a>, <a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/Green/N-5yc1vZbmbuZ1z0vqo4?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">green</a>, or <a href="https://www.homedepot.com/b/Lighting-Light-Bulbs/Red/N-5yc1vZbmbuZ1z0vch0?emt=plpfaq_2504_lightbulbs" style="text-decoration: underline;">red</a> to match your style. Consider using them for parties or to add a unique touch to your landscaping.

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Department

Review Rating

Brand

LUXRITE

Bulbrite

Feit Electric

Sunlite

Simply Conserve

YANSUN

EcoSmart

BLUEX BULBS

AduroSmart

BIBIVIS

Himalayan Glow

Westinghouse

DEWENWILS

EDISHINE

ELECWISH

Lepro

Vrbgify

Briignite

C Cattleya

Cync

EKIEUDL

NEXT GLOW

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SKYSHALO

Price

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$10 - $20

$20 - $30

$30 - $40

$40 - $50

$50 - $100

$100 - $150

$200 - $250

$300 - $400

Special Values

Lighting Technology

LED

Incandescent

CFL

Halogen

Bulb Shape

Light Bulb Features

Energy Saving

Enclosed Fixture Rated

No additional features

Dusk to Dawn

Color Changing (ROYGBIV)

Timer

Circadian Mode

Ceiling Fan Rated

Plug and Play

Light Bulb Shape Code

A19

PAR38

B11

PAR30

S14

MR16

PAR20

BR30

C7

BR40

G25

R30

A15

A21

C11

C15

CA10

G16

R40

Light Bulb Base Type