The IOTA IIS 550 I NOBAT is a UL Listed stand-alone sine wave output inverter designed to provide power to designated emergency lighting fixtures. In a power loss situation, the IOTA IIS 550 I will supply 550W of power from the IIS 550 I BAT Batteries which must be purchased separately. The IOTA IIS 550 I works in conjunction with fluorescent, incandescent, and LED lighting loads and will automatically run switched, normally-on, or normally-off designated emergency fixtures. The IIS 550 I is ideal for applications that utilize multiple lamp and fixture types.