Precision Fan + System controller for performance builds
Replace relays, simplify wiring, and gain full variable-speed control of electric fans, pumps, and accessories — all from one programmable controller.
Designed for standalone use or ECU integration, the G2 combines Smart Fuse Protection, CAN communication, and software-based configuration in a compact motorsport-ready module.
Supports Brushed & Brushless Devices
Works Standalone or With Your ECU
Smart Fuse Protection -max 80 amps continuous and safety limited to 90 amps in-rush
The G2 PWM Controller was built to eliminate the limitations of traditional relay-based control systems and give builders complete control over the devices that matter most.
Designed for brushed and brushless applications, the G2 delivers intelligent, variable-speed control for electric fans and other PWM-driven systems while simplifying wiring, reducing component count, and improving overall system performance.
Run the G2 as a standalone controller using temperature or voltage-based inputs, or integrate it directly with your ECU for advanced, system-driven control strategies. Whether you’re building a street car, race car, off-road vehicle, or custom swap, the G2 adapts to your application—not the other way around.
Behind the compact, motorsport-ready housing is a powerful control platform featuring dual 100Hz brushless outputs, programmable Smart Fuse protection, CAN communication, configurable inputs and outputs, and compatibility with 12V, 16V, and 24V electrical systems.
From daily drivers to championship-winning race cars, the G2 was engineered to provide the flexibility, reliability, and control that modern vehicle systems demand.
The G2 is configured through a dedicated Windows-based software platform that turns complex vehicle control into a simple, intuitive process.
Instead of fixed behavior or hardware limitations, you define exactly how your system responds—how it turns on, how it ramps, and how it protects itself under load.
Built for everything from simple fan control to fully integrated ECU-driven strategies, the software gives you complete control over how the G2 behaves in real time.
Define How Your System Behaves
Set your control strategy with precision.
Configure temperature-based activation points
Build custom 0–5V sensor response curves
Integrate ECU PWM control inputs
Select brushed or brushless operating modes
Adjust fan or motor ramp rates for smooth engagement
Set programmable Smart Fuse thresholds based on real system demand
Real-Time System Feedback
See what your system is doing as it happens.
Live monitoring of temperature, voltage, and input signals
Real-time current draw and load tracking
System health and board temperature visibility
Instant fault detection with clear status reporting
Smart Fuse Protection, Fully Configured
Traditional systems rely on fixed fusing. The G2 lets you define protection based on your actual application. Set current limits based on real-world load requirements, and the controller will manage protection automatically—shutting down safely and reporting faults when conditions exceed your set threshold.
Standalone or ECU-Driven
The G2 adapts to your build, not the other way around. Run fully standalone using temperature or analog inputs, or integrate directly with your ECU via PWM or CAN for dynamic, system-level control strategies.
Firmware That Evolves With Your System
With CAN-based firmware updates, the G2 is designed to grow alongside your build—supporting new features, refinements, and expanded capability over time.
Why Not Just Use Relays?
For decades, electric fans have been controlled using relays. While simple and effective, relays only operate in two states:
ON or OFF
This means your fans run at full speed whenever they’re activated, regardless of whether the engine needs maximum cooling.
The G2 PWM Controller takes a smarter approach.
Instead of switching fans fully on and off, the G2 continuously adjusts fan speed based on engine temperature, allowing your cooling system to respond precisely to changing conditions.
Benefits of PWM Fan Control
Maintain more consistent engine temperatures
Reduce fan noise during normal operation
Minimize high-current startup spikes
Lower electrical system load
Extend fan life through smoother operation
Improve cooling efficiency in varying conditions
Traditional Relay System
ON or OFF operation only
Full current draw at startup
Fixed cooling response
Multiple relays, fuses, and wiring components
G2 PWM Controller
Variable-speed fan control
Smooth ramp-up and ramp-down operation
Intelligent temperature-based response
Integrated Smart Fuse protection
Fully configurable through the G2 software platform
Whether you’re building a street car, race car, off-road vehicle, or custom swap, the G2 gives you complete control over how your cooling system performs.
Control More Than Just Fans
While cooling control is its primary application, the same PWM-based architecture and programmable I/O make it suitable for a wide range of auxiliary systems where precise, reliable control is required.
From standalone builds to fully integrated ECU systems, the G2 gives builders a flexible platform to manage multiple electrical loads with consistent, repeatable behavior.
Expand Your System Control
Beyond fan management, the G2 architecture supports a variety of PWM-controlled applications, including:
Electric cooling fans
Brushless fan systems
Fuel pumps
Water pumps
Auxiliary motors
Custom vehicle electrical systems
Designed to Scale With Your Build
Whether used as a single-function controller or as part of a larger integrated system, the G2 is designed to adapt as vehicle complexity increases—supporting standalone operation today and expanded system control in future builds.
One Platform. Multiple Applications.
Instead of relying on separate controllers for each system, the G2 provides a centralized, software-configurable approach to managing key vehicle functions with precision and consistency.
Specs
Electrical
Input Voltage: 12V–24V DC (compatible with 16V racing systems)
Reverse Polarity Protection: Built-in
Power Input: Direct battery or distribution bus connection
Maximum Current: Configurable smart fuse, max 80 amps continuous and safety limited to 90 amps in-rush.
Protection: Overcurrent and short-circuit protection integrated
Outputs
(2) 100Hz Brushless PWM Outputs
(1) PWM-Controlled Brushed Motor Output
(1) Configurable Relay Output
Output behavior fully software-configurable
Inputs
GM Temperature Sensor Input (-40°F to 300°F range)
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