In LEDs, some see an intelligence to rival smartphones

Enlighted Inc. is a Silicon Valley company that does LED lighting retrofits, with a little extra. Embedded next to every luminaire, so small you can barely see it, is a quarter-sized disk with a tiny antenna. Packed inside is a light sensor, a temperature gauge, a power meter and a motion sensor, as well as wireless devices that communicate with the building-management system, with the other lights and with local smartphones.