Emergency battery backup functionality with recessed cans has always been a chore - until today! Check out Keystone's Advanta Emergency line. No more guessing on which emergency backups/ballasts are compatible with which downlights. Keystone has an LED downlight with emergency functionality pre-installed and easy to test. All of this in one package! Available in 6" and 8", with both being color-selectable and power-selectable along with 90+ CRI for accurate color rendering.