Hand dryer

A hand dryer that removes water adhering to a hand inserted into a hand insertion portion with a high-pressure airflow blown from a nozzle, the hand dryer comprising:

• the hand insertion portion formed in a recessed shape in a body casing;
• an air blower provided in the body casing to generate the high-pressure airflow;
• the nozzle provided on a wall of the hand insertion portion to transform the high-pressure airflow from the air blower into a high-speed airflow and blow the high-speed airflow into the hand insertion portion;
• a hand sensor including a plurality of electrode pairs to detect a hand inserted into the hand insertion portion from a change in capacitance between two electrodes included in the plurality of electrode pairs, each of the plurality of electrode pairs consisting of a first electrode and a second electrode having different polarities to each other;
• a processor to execute a program;
• and
• a memory to store the program which, when executed by the processor, performs processes of,
• driving the air blower on the basis of a combination of the two electrodes with which a hand has been detected by the hand sensor.