The HTE 4 and HTE 5 electronic hand driers are renowned for being exceptionally quiet in operation. They have been especially developed to meet the demanding requirements of the catering trade, business and industry. The HTE driers' infrared proximity sensor automatically turns on the power when hands are within range and turns off the power once the hands are gone. Since the machines are only operating when hands are in range, maximum efficiency and energy saving are maintained at all times.