Using the HT45R35 in touch switch extractor fan control applications

The HT45R35 is 12-touch switch type Holtek microcontroller. Touch switches are non-contact capacitor type switch that can be used to replace the usual mechanical switch types. Here the HT45R35 device is used in an extractor fan control application. The application uses touch switches to replace the usual mechanical type of switches to control the extractor fan speed, timer function, illumination and LED indicator light function etc.

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