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REES52 DC 12V 5A PWM 4 Wires PC Fan Temperature Manumotive Speed Controller Module CPU High-Temperature Alarm with Buzzer and Probe for Arduino Heat Sink : Amazon.in: Industrial & Scientific
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arduino uno - How to eliminate noise from PWM controlled 12V fan at low speed - Arduino Stack Exchange
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Controlling a 4-wired fan PWM Signal using Arduino allows only two settings - Electrical Engineering Stack Exchange
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