The Vari-Volt Power Transformer’s variable voltage and variable amps make this the first fiberoptic control box designed for LED or halogen lamps. Allows the user to adjust the power output (volts or amps) to match the manufacturer’s recommended voltage for halogen systems or Ma for LED. Adjustable time delay keeps the light on after letting up on the foot pedal keeping the oral cavity lit without and active bur. Independently power two fiber-optic tubings.