PFE PFE series elevator elevator saving devices saving device is manufactured using Canadian technology, designed specifically for the elevator system, low-noise energy-saving products. This device can put renewable energy such as motor control process generated back to the grid, avoiding the use of conventional energy energy loss caused by brake unit, so as to achieve energy savings. This series of products have been installed inside the reactor and the noise filter can be directly connected to the grid, the grid will not cause interference and surrounding electrical equipment.