E2 Lighting 6″-8″ Tunable LED w Prewired Emergency Battery Backup: High-lumen, metal conduit LED light with prewired emergency battery backup for commercial applications. Available in 6″ and 8″ sizes, with wattages ranging from 8W to 33W. Emergency battery provides 90 minutes of backup power at 1500 lumens max. Designed with junction box and quick disconnects for easy installation. Mounts directly into the ceiling. Input voltage: 120-277V. CCT tunable to 3000K/4000K/5000K. 0-10V Dimming and Triad Dimming available.