CWI PWM Controller

CWI PWM Controller

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This controller was designed to control cooling fans, blowers, fuel pumps and other devices in automotive and industrial applications. Want to modify the pre programmed protocol? Download our PWM Configurator below and add the RS485 USB Cable to your order!

What’s in the Box:

[1] PWM Controller

[1] Hardware Kit with 12-Pin Duestch Connector and pins

[1] Installation Instructions

[2] CWI Performance Stickers

SKU: N/A Category:
  • Description
  • Additional information
  • Unboxing Overview
  • Installation Video


Introducing the versatile and flexible PWM controller, designed for use in automotive and industrial applications. This controller is equipped with customizable software, allowing you to control cooling fans, blowers, fuel pumps, and other brushed motors with ease. If you prefer, our expert staff can preprogram the controller to meet your specific requirements. The best part? This controller is built right here in the U.S.A. and has already been tested for functionality, ensuring reliable operation for your applications.

What sets this fan controller apart from the competition is its unparalleled control capabilities. With the free configurator, you have the power to fine-tune your control settings to meet your unique needs. Choose from a range of input signals, including analog sensors, PWM signals, and CAN-BUS signals, and customize sensor inputs to match your specific requirements. The PWM input frequency is also adjustable, so you can ensure that your controller works with any ECU.

With the option to manually override inputs, you can take control at any time, perfect for situations where you need to make on-the-spot adjustments. You can even select your preferred start type, whether you prefer a soft start or a hard start. With so many customizable options, this fan controller is truly one-of-a-kind in the market.

Invest in a controller that delivers the versatility and control you need to keep your applications running smoothly. Order your controller today and experience the difference for yourself!

Download instructions here: PWM Controller instructions


Dimensions: 7.25” x 3.75” x 1.75”

Enclosure construction: 6061 Billet Aluminum, IP66 Rated

Weight: 1.17lbs

Protections: Reverse Polarity & Overcurrent Protection

Max output: 200 Amp in-rush, 100Amp Continuous, Auxiliary Output .5 Amps

Operating voltage: 12v

Connectors: DT Series 12 Pin Deutsch (included), (4) 10MM Ring Terminal Studs

PC communication: RS485-USB

Additional information

Optional Fan Relay Harness

No Harness, Add Fan Relay Harness

Optional Temp Sensor

No Sensor, VDO Sensor, GM 3/8th NPT, GM M12 LS Type Engines

Optional RS485 USB

No RS485 USB, Add RS485 USB