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IIS 1100

Emergency Lighting Inverter

The IOTA IIS 1100 Inverter System is a UL Listed single-phase sine wave output inverter designed to provide power to designated emergency lighting fixtures in the event of a loss of normal power. In a power loss situation, the IOTA IIS 1100 will supply 1100W of emergency power from the battery supply to operate the connected load at full brightness. The IOTA IIS 1100 works in conjunction with LED, fluorescent, or incandescent fixtures and is capable of operating normally-on, normally-off, and switched designated fixtures in the emergency mode. The IIS 1100 is ideal for providing emergency power to extensive 120V or 277V lighting arrangements that utilize multiple lamp and fixture types. The IIS 1100 conducts monthly and annual tests for operation readiness. Test result data is communicated via onboard indicator lights. The IIS 1100 features a durable, front access steel cabinet, and is covered by IOTA’s standard three-year warranty.

Input Voltage

Single phase 2-wire 120/277VAC

Input Rating


Input Current (120/277)


Output Voltage

Single phase 2-wire 120/277VAC



Output Power

1100W / VA

Transfer Time

2-10 ms

Emergency Operation

90 minutes

Load Power Factor Range

.5 lagging to .5 leading

THD (input/output)

<10% / <3%

Synchronizing Slew Rate

1Hz per second nominal

Static Voltage

+/- 2% Load current change

Dynamic Voltage

+/- 10% load step change

Inverter Overload Threshold

250% for 16 cycles, 110% continuous

Crest Factor


Operating Temp (inverter)

0° to 40° C

Operating Temp (battery)

20° to 30° C

Relative Humidity

< 95%


Maintenance-free Valve Regulated Lead Acid (VRLA)


245 lbs


UL 924 Listed
find the UL Mark on this product

*Input +/- 3%, Output in emergency +/- 0.05Hz

Advantages and Features

Product Advantages

  • Provides full light output in the emergency mode
  • Conducts required monthly and annual tests for operational readiness


  • PWM/MOSFET inverter design delivers pure sine wave output
  • Micro-processor controlled, three-stage charger
  • Field Selectable Dual Voltage 120/277VAC
  • Valve Regulated Lead Acid (VRLA) batteries provide long life and are maintenance free
  • Low Battery Voltage Disconnect protects batteries against deep discharge
  • Includes Input Fuse and Battery Fuse Protection
  • Operates Normally On, Normally Off, and Switched fixtures
  • Line voltage allows for remote mounting of emergency fixtures at distances of 1000+ feet
  • Dimming Relay option for dimming control applications
  • Durable steel compact cabinet design with white finish
  • Meets or exceeds all National Electrical Code and Life Safety Code Emergency Lighting Requirements
  • Covered by IOTA’s standard 3-Year Warranty on all electronic components and pro-rated warranty on batteries.
  • Factory Startup and Training available

Length: 15.17"

Width: 2.26"

Height: 2.05"