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About Brightness and Light Appearance
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Find the right lumen level to brighten your space. Then, compare the way warm, neutral, and cool lighting affect the appearance of everyday objects.
Grooved-Base Miniature Light Bulbs
 |  |  |
LED | Incandescent | Midget S5.7 Base |
Often used in control panels to illuminate switches, status icons, and indicators. A grooved base holds these bulbs securely in their sockets. Brightness is measured in lumens; the higher the lumens, the brighter the bulb.
LED—Last longer and are more efficient than incandescent bulbs.
Bulb | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bulb Trade No. | Voltage | Wattage | Brightness | Light Technology | Rated Life | Color | Overall Lg. | Dia. | Material | Shape No. | Pkg. Qty. | Pkg. | |||
Single Contact—S5.7s Midget Base (0.23" Dia.) | |||||||||||||||
Tubular Bulb | |||||||||||||||
| 276, 334, 388 | 24V AC/28V AC/24V DC/28V DC | 0.18 W | 1 lm | LED | 30,000 hr. | Clear | 0.63" | 0.24" | Glass | T1 3/4 | 1 | 6570T972 | 00000 | ||
| 334 | 28V AC/28V DC | 1.1 W | 4 lm | Incandescent | 4,000 hr. | Clear | 0.63" | 0.22" | Glass | T1 3/4 | 10 | 9527T147 | 00000 | ||
| 334, 388 | 24V DC/28V DC | 0.4 W | 0.27 lm | LED | 100,000 hr. | Red | 0.63" | 0.24" | Plastic | T1 3/4 | 1 | 9527T341 | 00000 | ||
| 334, 388 | 24V DC/28V DC | 0.4 W | 1 lm | LED | 100,000 hr. | Green | 0.63" | 0.24" | Plastic | T1 3/4 | 1 | 9527T342 | 00000 | ||
| 336 | 14V AC/14V DC | 1.1 W | 6 lm | Incandescent | 1,500 hr. | Clear | 0.63" | 0.22" | Glass | T1 3/4 | 10 | 9527T139 | 00000 | ||
| 337 | 6V DC | 1.2 W | 1 lm | Incandescent | 1,000 hr. | Clear | 0.63" | 0.22" | Glass | T1 3/4 | 1 | 9527T351 | 0000 | ||
| 379 | 6.3V AC/6.3V DC | 1.3 W | 5 lm | Incandescent | 20,000 hr. | Clear | 0.63" | 0.22" | Glass | T1 3/4 | 10 | 9527T129 | 0000 | ||
| 386 | 14V AC/14V DC | 1.1 W | 4 lm | Incandescent | 15,000 hr. | Clear | 0.63" | 0.22" | Glass | T1 3/4 | 5 | 1505K385 | 0000 | ||
| 388 | 28V AC/28V DC | 1.1 W | 4 lm | Incandescent | 15,000 hr. | Clear | 0.63" | 0.22" | Glass | T1 3/4 | 5 | 1505K89 | 0000 | ||
