The HTE 4 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. Because users need never touch the driers, a high level of hygiene is ensured. As with all products from Stiebel Eltron, safety and reliability is engineered into the HTE series of hand driers: the sensor switch prevents non-stop operation and a built-in thermal link prevents the machines from overheating.