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SATCO Lighting S21855 5W BT15 LED, White, Medium Base, 2700K, 450 Lumens, 120V
5 Watt BT15 LED - White - Medium Base - 2700K - 450 Lumens - 120 Volt
Manufacturer Resources
Spec Sheet
Product Specs
- Product Group:
- Indoor Lighting
- Product Subgroup:
- Light Bulbs
- Product Material:
- Glass / Copper
- Lumens:
- 450L
- Product Weight:
- 0.11 lb
- Dimmable:
- Yes-Dimmable
- CRI:
- 90+
Satco Lighting S21855 – Frequently Asked Questions
1) Will this LED match the warm color of the incandescent bulbs already in my building?
2700K is the warm white color temperature that reads closest to a standard incandescent, so it blends with existing incandescent or 2700K lamps in the same space. If your other openings are stocked at 3000K or 4000K, this one will look noticeably warmer side by side.
2) Can I put this 5W BT15 LED on a dimmer in a hotel room or apartment fixture?
The bulb is dimmable, so it will work on a dimmer-controlled circuit. For a property with existing incandescent-era dimmers, test one bulb on the actual dimmer before swapping a whole floor, since low-wattage LED loads can behave differently on older units than on LED-rated dimmers.
3) How bright is a 5 watt BT15 LED compared with the incandescent bulb I am replacing?
At 450 lumens, the S21855 sits in the range of a 40 watt incandescent, so it is a decorative and accent-level output rather than a task light. The draw is 5 watts, which is where the energy saving comes from on a fixture that runs long hours.
4) Is the color rendering good enough for hospitality or retail display use?
CRI is 90+, which is high enough for guest rooms, lobbies, restaurants and retail where skin tones and finishes need to look right. Standard-grade LEDs in the 80 CRI range will look flatter in the same fixture.
5) Is the Satco S21855 a clear filament-look bulb or a frosted one?
It is the white finish version, so the glass is diffused rather than clear. That softens the view of the internal LEDs, which is what you want in an open fixture where the bulb is visible and glare is a complaint.
6) What is this BT15 LED bulb made of, and how much does it weigh?
Glass envelope with copper in the construction, and the bulb weighs 0.11 lb. Light enough for small sockets and swing-arm or clip fixtures where a heavy lamp strains the holder, and glass means it should be handled like a conventional bulb rather than a plastic-bodied LED.
7) Where can I get the full photometric spec sheet for Satco S21855?
Satco publishes a PDF spec sheet for the S21855 covering the lamp data, and it is linked from the product's specifications. Order by MPN S21855 so you get the 2700K, 90+ CRI white version rather than another BT15 in the family.
How fast can I get the Satco Lighting S21855 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Satco Lighting S21855 come with a warranty?
Absolutely. The Satco Lighting S21855 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Satco Lighting S21855?
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