CPC122040SC-R ebm-papst | ebm-papst Fan Speed Controller, Variable, 12 V dc, 1μA, Pulse Width Modulation | 667-0377 | RS Components
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CPCXXVV10UN-R ebm-papst | ebm-papst A2P Interface Series Fan Speed Controller, Variable, 10 → 57 V dc, Pulse Width Modulation | 165-1401 | RS Components
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Dc 12v 5a Pwm Pc Fan Temperature Manumotive Speed Controller Module Cpu High-temp Alarm With Buzz Probe For Arduino Heat Sink - Instrument Parts & Accessories - AliExpress
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