The IOTA IIS 25 I is a UL Listed sine wave output inverter that provides power to designated emergency lighting fixtures. During a power loss, it supplies 120 or 277 Vac power to operate up to a 25W total connected load for at least 90 minutes. The IIS 25 I is compatible with LED, fluorescent, and incandescent lamp and fixture types and can automatically run switched, normally-on, or normally-off designated emergency fixtures. It is particularly useful for emergency lighting in applications with elevated ceilings, high output luminaires, and lamp types utilizing Edison screw designs.