The American Dryer AD90 hand dryer is a great value in a compact, mid-range hand dryer with high quality components. Universal voltage makes it easier to install. Only one watt standby power and 1250-1400W operating usage means terrific savings (vs traditional dryers which use 2300W of power) and no wasted energy. Heavy duty universal motor and NiChrome heating element, both thermally protected for long life. 67 dB Operating sound level is lower than most traditional hand dryers, and much quieter than most high-speed hand dryers. Vandal resistant tamper proof cover screws prevent unauthorized access to hand dryer internals, and a 35 second safety shut off prevents damage in case the infra-red sensor is tampered with.