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921-24-5050-WW Warm White 5050 SMD Light Bulb with Wedge Base

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Your Price:
$9.99 (You save $2.50)
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Product Description

Click Image for more pictures and specifications.  Buy 10 per SKU and save 10%.

24 SMD chips on this bulb.  Competitor bulbs only have 18 chips to save money but do it at the expense of light output.

Full Aluminum Cage, you can feel the weight difference!  Competitor Bulbs have fiber cages.


24 Warm White Light 5050 SMD LEDs  (if you prefer Cool Bright White Light, see item 921-24-5050-CW)

Easy push installation

Standard T10 Wedge base - may ship silver or white  Cross References to incandescent bulbs 904, 904NA, 906, 906NA, 912, 916, 916NA, 917, 920, 921, 922, 158, 160, 161, 161B, 168, 168A 168NA, 175, 193, 194, 194B, 194G, 194NA, 194R, 2821, 2825, 2827, 2886X, 3652, 558, 579, 658, W5WB

Important Information about Lumens and Visual Light Output

Item Number 921-24-5050-WW
Color Kelvin 3200
Calculated Lumens 360
Amps at 12.8v DC (Fluke Actual) 0.17
Rated Volts 10-30v DC
Polarity Non Polarity
Overall Length 1 3/4" 
Overall Width (or diameter) 3/4"
Overall Height n/a

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Product Reviews

Previous | Showing reviews 31-40 of 153 | Next

  1. Very Satisfied 5 Star Review

    Posted by on 19th Jul 2016

    Bought three of the warm whites to test them on a weekend boondocking trip and was happy with the color and amount of light.
    quality is evident on all of the bulbs
    Ordered 11 more for all ceiling fixtures in my 24 ft class C, except for four that I put the small warm whites in. Was cautious while installing the first few, but these lights are pretty tough so I just wiggled them in with steady pressure. The wife loves them too!

  2. Great website 5 Star Review

    Posted by on 18th Jul 2016

    Made purchasing my LED bulbs easy. Learned a lot about LED's when using the site. Learned that I best use the warm white color in my RV to create soft color. Great service and prices

  3. 921-24-5050-WW bulbs---good stuff 4 Star Review

    Posted by on 17th Jun 2016

    super delivery time / easy install. I struggle with the traditional white/blue led "glare" I. e. (one of my automotive droplights)- my wife hates it. these are pleasing nice warm, but bright light. reason for 4 stars-- my R.V. uses 9 so I have an extra. if I don't need it for a long time it'll be 5 stars!

  4. HAPPY so far 4 Star Review

    Posted by on 14th Jun 2016

    shipped on time ,easy install,
    they're not the cold blue light that we were afraid / hard to tell from the 921 that we replaced. we're looking forward to the battery savings and life promised-all is well

  5. used very little battery 4 Star Review

    Posted by on 12th Jun 2016

    Only got 2 bulbs to start with, installed in center of the trailer. And tied to use mainly these bulbs, after 4-days 3-nights dry camping
    battery level would bounce between 3 to 4 light level good-charged.
    But after 1st night 1 bulb was out, removed it and turned it over?
    Worked good the rest of the time?

    M4 Note: This type of bulb has a plastic base with wires that wrap the bottom. Ensure the wires go straight up the base and pull them slightly away. It probably was just not getting a good contact in the socket.

  6. So far so great! 5 Star Review

    Posted by on 2nd Jun 2016

    VERY happy with these bulbs! The quality of bulb construction was immediately evident. They are just a tad brighter than the 912/921 incandescent bulbs I had in the camper originally. The color tone is also a tad whiter compared to the incandescent's noticeable yellow hue. My fixtures used to get really hot with the incandescent bulbs. They now stay cool with these LEDs. Shipping was also extremely fast. Great product! Great company!

  7. Great Warm White Light 5 Star Review

    Posted by on 2nd Jun 2016

    We got tired of the energy draw and the heat put off by the 921's in our camper. Did some research around and M4 was the way to go. Had a single question about an application of a bulb and was contacted immediately by Steve. The 921-24-5050-WW
    Warm White bulbs put off a nice warm, natural light over our dinette and in our living area while producing zero heat.

    Great customer service, fast shipping, and a superior product. We will order again when we finish our LED retrofit.

  8. Outstanding lights! 5 Star Review

    Posted by on 11th Apr 2016

    I have done a lot of research on different LED replacement lights for my RV and decided to try M4 brand of lights. I purchased the 921 warm white bulbs and was very pleased with the color of the lights compared to my existing RV lights. They are very close to the same color and brightness. I would defiantly recommend these lights to anyone looking to upgrade the lights in their RV.

  9. Perfect! 5 Star Review

    Posted by on 23rd Mar 2016

    I am completely satisfied with this product. This warm color bulb used the th bathroom.

  10. Great Replacement for Incandescent Bulbs 5 Star Review

    Posted by on 9th Mar 2016

    The "Warm" Color worked best for us ... very similar to the incandescent bulbs, maybe a little brighter. And of course, a lot less heat and power usage. Delivery was very prompt.

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