Prof.Model 750 W Infra-Red Lamp-Vari. Cntrl &Timer-Mobile 750 W lamp is for use in hospitals and clinics * The control panel houses an on / off indicator light and an intensity control * The dial can be turned either clockwise or counter clockwise to select the proper heat from 0o to 100% wattage with infinite control over the first 50% of total wattage * Control provides automatic compensation for the line voltage fluctuations up to + / - 15% *