Featuring the PowerStrip LED Modules from the GE Tetra Range. PowerStrip is available for single-sided box signs and Tetra PowerStrip DS is designed for double-sided box signs. Both LED systems reduce maintenance expenses, heighten visual performance and decrease energy costs. Using the OptiLens™ technology creates an impressively even light coverage of the sign face. Perfect for use on a rail system, The PowerSTRIP modules come with a 5 year warranty.