Derale 16797 PWM Electric Fan Controller for Brushed Fans, 70 Amp

Control your BRUSHED electric fan speed based on cooling demand with the Derale 16797 digital PWM fan controller. Rather than switching fans fully on and off, it continuously monitors temperature at the side of the radiator and adjusts fan speed as needed. Soft start ramps the fans up gradually to reduce amperage spikes, while lower fan speeds can reduce fan noise.

Key features

• Pulse-width modulation adjusts fan speed from 0–100% to help maintain the desired temperature.
• Controls multiple 12V brushed electric fans, up to 70 amps combined.
• Soft start technology reduces startup amperage spikes.
• Built-in A/C override circuit and 20-second fan run-on after the vehicle is turned off.
• Includes an automatic-resetting circuit breaker.
• Built-in protection against short circuit, over-amperage, low voltage, high voltage, reverse polarity, over-temperature, and anti-flyback.
• Black finned 6061 aluminum housing.

Specifications

• Part number: 16797
• Combined fan capacity: 70 amps
• Width: 3″
• Length: 5-13/16″
• Depth: 1-5/8″
• Sensor: adhesive sensor only; no NPT or probe option

Compatibility notes

For 12V brushed electric fans. Not compatible with brushless fans or the following two-speed original-equipment fans: Dodge Viper, Ford Taurus, and Lincoln Mark VIII. Those fans exceed this controller’s amperage or functional capabilities. Confirm your fans’ combined amperage and type before ordering.

The controller wires between the vehicle battery and electric fans.