a control panel used in combination with a power unit to control the operation of a sauna . the control panel is equipped with a microprocessor that has software and proper circuitry to allow a user to use buttons to input information into the control panel regarding the time , temperature , and day on which heating within the sauna is to occur . additionally , the power unit has a microprocessor with a pulse width modulation output that causes individual heating elements to continuously produce varying intensities of heat in order to maintain a consistent desired temperature , and / or intermittently radiate heat creating a wave of heat to be emitted by each individual heating element .