Washes. Then dries, at 341mph.
Dyson Airblade™ hand dryers have HEPA filters installed to capture 99.95% of bacteria-sized particles from the air. Along with an antibacterial coating and touch-free infrared operation, they help prevent the spread of bacteria.
Air from the HEPA filter flows over the electronics, cooling them. It's channelled up the machine by the motor, through air ducts insulated to reduce noise. Sheets of filtered air are then forced at 341mph through apertures 0.55mm wide, literally scraping water from hands.
"Developing the Dyson digital motor V4 took seven years. It's packed full of features and incredibly power dense."
Times per second switching rate
Years developing the Dyson digital motor V4
Test cycles to check robustness