The Flextra S4 enclosure is designed to fit on the side of most traffic controller cabinets. Any of Alpha Technology’s line of Novus UPS can fit inside, providing you with a range of backup power from 500 to 2200W. The Flextra S4 enclosure can accommodate a wide variety of AlphaCellTM batteries allowing you the maximum possible range of backup time for your system. The NEMA 3R rating means the enclosure is able to protect its internal components from the harsh outdoor environment.

> Can be installed on any existing ground mount enclosure
> Engineered to hold an Alpha power module and a battery string