Iota Unit inverter is ideal for applications requiring emergency source lighting arrangements that utilize multiple lamp and fixture types. It has input voltage rating of 120/277-Volts and output voltage rating of 120/277-Volt AC. It has power rating of 155-Watts input, 125-Watts at 0.9 leading to 0.9 lagging PF output. This surface mountable inverter has 16-gauge steel housing. It measures 4.5-Inch x 23.15-Inch x 11.71-Inch. It supports fluorescent, incandescent and LED lamps. This inverter comes with momentary contact test switch, yellow ready indicator, green inverter-on indicator and red charging indicator. It works with 12-Volt valve regulated lead acid battery for long life. Unit inverter is UL listed and NEC certified.