| http://www.w3.org/ns/prov#value | - This case is a system where hands are detected by interrupting either one of infrared lights A and B from the infrared light emitter 20 and the infrared light emitter 9, where when hands are inserted to a point of infrared lights B, a signal is sent to the micro-computer mounted on the control circuit so that the high pressure airflow generator 2 starts operation.
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