McPherson Controls Full Wave 150 Amp Static Analog Voltage Regulator is capable of working in Parallel. Works with A1+A2 Power Factor Correction. Multiple Sensing Voltages. Built In Flashing Unit. The Regulator is built inside a wall-mount enclosure with Cooling System and separate Power Input Sensing. Works with Electric Motor Division (EMD), large CatepillarÃ‚â€™s, and large DELL Generators.