High-intensity LEDs come in wide range of sizes

DIALIGHT 670 Series LED Panel Mount Indicators provide high-visibility and a wide range of sizes and operating voltage in high-durability housings. Devices provide high-intensity daylight visibility hundreds of times brighter than its 600 Series predecessor. Products are available in 2, 3.3, 6, 12 and 24Vdc operating voltages (depending on model). Each unit in the series consumes 90 percent less energy than equivalent incandescent indicators, while tolerating ambient temperatures from -20C to +75C and lasting up to 100,000 hours. http://www.dialight.com