The product is an isolation transformer, an accessory to Computed Tomography Scanner. It consists of electronic circuitry enclosed in a metal case. According to Philips Medical Systems, the metal case is manufactured from self-extinguishing materials. The unit is labeled in part, "Power Conditioner *** Part Number 4450028-XX *** Frequency: *** S/N: *** Rev: *** MFG date: *** INPUT RATINGS *** Model: MCT 100/480 ISOTRAN PLUS *** OUTPUT RATINGS *** MEDICAL POWER SUPPLY UL *** TEAL Electronics Corporation, San Diego, California ***".