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.
921-24-5050-WW+
24 Warm White Light 5050 SMD LEDs (if you prefer Cool Bright White Light, see item 921-24-5050-CW or Natural White see item 921-24-5050-NW)
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
| Specifications | |
| 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 |
Product Videos
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Product Reviews
176 Reviews Hide Reviews Show Reviews
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Pleased
Brightness pretty much matched the original incandescents. The physical size is a little bigger than the 921 bulb they replaced. Overall a good replacement.
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Plug and Play
Pull out the old bulb, plug in the new bulb! Great light at a much lower energy usage. Old bulb generated a lot of heat, i.e. wasted energy... The LED is pretty cool to the touch... And best of all, the price was right!
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Very Happy
I was nervous as to how bright these would be. I was very pleased. Seem to be the same or slightly brighter than the original incandescents.
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Save your Battries
T us to have to remind my other half to turn off the lights in my trailer, with these lights I do not have to remind her any more, they -save a lot of energy, they are great. 921-24-5050, the ordering and timely shipping where great.
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LED upgrade
Upgraded 10 #921 bulbs in Class A RV to 921-24-5050-WW Warm White 5050 SMD bulbs with wedge base. Very happy with brightness; relatively same as original bulbs. Extremely happy with M4 website and service, and shipping was free. Bulb quality appears very good. Looking forward to future boondocking.
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LED Upgrade
Upgraded 10 #1141 bulbs in Casita Travel Trailer to the LED 1156-24-5050 Warm White bulbs. The brightness is just a bit brighter than the old bulbs and the battery energy used is just a fraction as compared to the original bulbs. The quality appears very good and the M4 website is just full of good information helping me to choose the correct replacement. Also the shipping was free and took only 2 days, couldn't ask for a better time than that. Overall, I am very happy with this purchase.
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LED's
Great customer service . Led,s work better than expected.
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Review of LED replacement for RV 912LL incandescent
Exceeded expectations. As RV battery voltage previous bulbs started to become dimmer. LED bulb did not.
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Low draw on battery
These lights are great. I bought 10 to replace all lights in my 17' travel trailer. I think they are brighter than the original incandescent. For each double overhead light, I only need one bulb. My main interest was in reducing the draw on my battery. I was testing volts (VDC) at my CO/LP detector. 2 incandescent bulbs on drew the voltage down by about 0.8 VDC. 2 M4 LED's drew down the voltage by about 0.3 VDC. Customer service is great as well. One did not work and M4 promptly sent a replacement.
