VAKPU covers 208-240VAC applications vs. individual voltages for obsolete VMP products; VAKPU has adjustable drop-out setting of 80-95% of nominal now standard vs. fixed at 95% of nominal on VMP products; VAKPU has adjustable time delay on drop-out now standard vs. VMP with fixed 50ms drop-out; better LED status indication on VAKPU products; VAKPU units are SPDT only while VMP products are DPDT; VAKPU units are cURus and also UL Listed when used with Macromatic socket 70169-D