About this item

The 12 V–40 V DC Motor PWM Speed Control Switch Governor is a compact yet powerful module designed to precisely regulate the speed of brushed DC motors using pulse-width modulation (PWM). With adjustable duty cycles ranging from 10% to 100%, it delivers smooth, user-defined control over motor speed. The module can continuously output up to 8 A and supports a maximum power capacity of approximately 400 W. Built with essential protection features, it includes a 10 A fuse for overload and short-circuit defense, reverse polarity protection, and over-voltage safeguarding for the control circuitry. The controller operates at a PWM frequency of around 13 kHz, offering efficient, low-heat performance. Despite its robust functionality, the module maintains a lightweight (≈ 69 g) and compact form factor (~6 × 5.5 × 2.8 cm), making it ideal for space-constrained applications. Note that this controller is specifically intended for brushed DC motors only—using it with brushless motors may lead to malfunction or damage. Additionally, the device is not reverse-polarity protected; incorrect wiring can render it inoperable. Packaged for practical deployment, this governor includes a 15-day warranty against manufacturing defects for additional peace of mind.