The ASL Industrial 110V AP Vacuum Cleaner is a powerful vacuum with 3 motors inside as well as 3 polyester HEPA filters. A unique feature of this vacuum is the auto-pulsing system. When activated, the system will clean the filters every few seconds as the vacuum is being used to ensure maximum performance. There are no circuit boards with this model. As a 110V, the AP Vacuum is able to plug directly into standard wall sockets, which simplifies the task of finding an adequate power source.