When sensitive electronics fail, it’s rarely a dramatic explosion. Usually, it’s heat, slowly, quietly, relentlessly working against your system until something gives. Our device cooling controls are built to stop that from happening, keeping your equipment running at the right temperature, with the right airflow, and with the visibility to know when something’s off before it becomes a problem.
Speed control, efficiency, and acoustic management across a wide range of DC fan applications, such as medical device cooling or thermal management for enclosures. All of our catalog controls can be used as the starting point for a fully custom design.
PWM speed controller for 1–6 four-wire fans (12V, 24V, and 48V) based on temperature or I2C communication inputs. Includes fan monitoring and field programmability via the Navigator or I2C.
PWM speed controller for 1–2 four-wire fans (12V, 24V, and 48V) using 0-10V, 4-20mA, and temperature inputs. Includes fan monitoring and field programmability via the Navigator.
Voltage speed controller for 1–4 three-wire 12V fans based on temperature or I2C communication inputs. Includes built-in fan monitoring. Field programmable via I2C.
Temperature speed controller for two-wire fans, with support for 1-3 temperature sensor inputs, including field programmability with Navigator.
Temperature based speed controller for two-wire fans with support for 1 temperature sensor input.
Speed Controller for two-wire fans using 0-10V, 4-20mA, or knob control inputs.
Handheld field programmer that pairs with Cirrus and Multi SD product lines.
Your fans are working. But are they working correctly? CRI’s fan alarm systems track RPM in real time, catching degraded or failed fans before a thermal event takes down your system.
Medical Device Cooling
Data Center Cooling
Telecom Cooling
Electronics Cooling
Acoustic Management
Intelligent speed scaling ensures your fans only run as fast as necessary, minimizing noise and vibration.
Thermal Longevity
Predictive cooling stabilizes internal temperatures to prevent heat soak and significantly extend the operating life of your critical electronic components.
Fault Detection
Integrated tachometer monitoring provides real-time failure alerts, allowing your system to trigger safe-mode protocols before reaching catastrophic thermal shutdown.
Energy Efficiency
Our device cooling controls modulate fan speed based on thermal demand, which means your system draws only what it actually needs.
Bring your motor type, your input signals, your speed range requirements, or your problem. Whether you need a catalog product or a full design-to-build engagement, our engineers have seen a lot of fan control applications over 40 years, and odds are good we’ve built something close to what you need. We can customize any of the catalog products as much or little as needed. Let’s figure out what works.
Engineering insights, product updates, and resources to help with your next project.
If your current control is holding your product back, or you’re starting from scratch and need a partner who’ll see it through, let’s dig into the details together. Reach out to the team and we’ll take it from there.
DC fans are efficient, controllable, and well-suited for variable-speed applications. They respond well to PWM or analog control signals, making them the natural choice for applications that need to modulate airflow based on temperature.
On the downside, they require a DC power source and typically cost more than their AC counterpart.
Yes, and many do. In telecom racks, medical enclosures, and data center hardware, DC fans run around the clock. The variable that matters most is how they’re managed. A fan running at 100% constantly generates more heat and wear than one operating at the appropriate speed for thermal demand. Speed controllers that modulate based on temperature inputs reduce wear, lower acoustic output, and extend the operational life of both the fan and the surrounding system.
A cooling fan controller is a power-electronic control that manages the speed, behavior, and fault response of one or more cooling fans within a system.
Basic controllers handle on/off switching while more sophisticated ones, like CRI’s device cooling controls, respond dynamically to temperature inputs, monitor fan RPM for fault detection, and adjust speed in real time to maintain target thermal conditions.
