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Rectangular black controller with copper finish and LED display, 6 by 4 by 3 inches

FASTSTORM RL104061 Digital Fan Control 12V/24V 40A 104-230°F IP54

SKU CH-8WSD-MQPJD MPN RL104061

Digital fan controller manages one or two 12V/24V fans with adjustable 104–230°F range, 40A relays, IP54 rating, and 10-second delayed second-fan start

  • Product nameDigital Thermatic Fan Switch Kit FASTSTORM
  • voltage12 volts_of_direct_current
  • electrical usage (watts)40 amps, 12 volts_of_direct_current
  • weight0.7 pounds
  • descriptionDigital Thermatic Fan Switch Kit, FASTSTORM, RL104061, 10406
  • finishCopper
  • Adjustable 104°F to 230°F range for precise cooling control
  • Dual 40A relays handle up to 50A max current
  • 12V and 24V operation with 24V relays included
  • Controls one or two fans with 10-second delay start
  • IP54 rated enclosure resists dust and water ingress

Universal 12V/24V Radiator Fan Controller

The FASTSTORM RL104061 digital thermatic fan switch kit manages one or two electric cooling fans on 12 volt or 24 volt vehicle systems. It replaces part number 0444 and fits Thermatic electric fans, electric water pumps and compatible cooling systems. The kit includes pre-labelled wiring, mounting hardware and the required 24 volt relays for a direct installation.

Thermal Regulation and Dual-Fan Logic

An LED display shows real-time and set temperatures in Celsius or Fahrenheit across a 104 to 230 degree Fahrenheit range. The controller activates the first fan at the set point and starts the second fan after a 10 second delay to prevent circuit overload. Fans run until the air temperature drops 1 degree Celsius below the target, with a default shut-off at 96 degrees Fahrenheit. Dual 40 amp relays handle up to 50 amps maximum current through 12 AWG wiring.

Upgrade From Basic Single-Fan Switches

This unit replaces simple on-off thermostats that lack dual-fan staging, voltage flexibility or a visible temperature readout. The jump is worth it when a build runs dual electric fans, operates on a 24 volt system or needs precise set-point adjustment without guesswork. It is not for installations that require variable-speed PWM control or CAN bus integration.

Highlights

  • Adjustable 104°F to 230°F range for precise cooling control
  • Dual 40A relays handle up to 50A max current
  • 12V and 24V operation with 24V relays included
  • Controls one or two fans with 10-second delay start
  • IP54 rated enclosure resists dust and water ingress

Specifications

BrandFASTSTORM
ModelRL104061
Product nameDigital Thermatic Fan Switch Kit FASTSTORM
voltage12 volts_of_direct_current
electrical usage (watts)40 amps, 12 volts_of_direct_current
weight0.7 pounds
descriptionDigital Thermatic Fan Switch Kit, FASTSTORM, RL104061, 104061, touch, Thermatic Electric Fans, EWPs, vehicles with compatible cooling systems
finishCopper
materialPaper
dimensions6 in x 4 in x 3 in

Questions about this item

How do I install the sensor and wiring for the RL104061 fan controller?

Mount the sensor between the radiator fins and follow the included wiring diagram to connect the controller to the 12V or 24V electrical system using the pre-labeled 12AWG wires and dual 40A relays.

What components will need replacement during the life of the RL104061 kit?

The two 40A relays rated to 50A max current are the primary service items; the kit includes replacement 24V relays if you convert the system voltage.

What thermal limit triggers the fan shut-off on the RL104061 under sustained load?

The controller turns the fans off automatically when the temperature falls 1°C below the set point, with a default hysteresis that shuts off at 96°F when set to 104°F.

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