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<div oncopy="alert('Copy not allowed！');return false;" oncontextmenu="return false" onkeypress="return false" onkeydown="return false" onkeyup="return false" onselectstart="return false" ondragstart="return false" onbeforecopy="return false"> SG3525 PWM Controller Module Adjustable Frequency 8-12V 100HZ-100KHZ Features: <br> The onboard SG3525A PWM control chip<br> The onboard 78 m05 voltage chip， provide reliable reference voltage<br> Onboard two precision adjustable resistance， R3 control duty ratio， frequency of R4 control<br> The onboard power light<br> Working voltage: 8 - 12 v<br> Frequency: 100HZ-100KHZ<br> The board size: 31 (mm) x18 (mm)<br> <br> Package Included: <br> 1 x SG3525 PWM Controller Module </div>