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For the 2024 holiday season, eligible items purchased between November 1 and December 31, 2024 can be returned until January 31, 2025.
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DC 12V 1A Automatic PC CPU Fan Temperature Control Speed Controller Case Fan Governor

4.4 4.4 out of 5 stars 41 ratings
$10.99
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Purchase options and add-ons

Color Blue, Blue, black
Brand Qianson
Voltage 12 Volts
Material Copper
Item Weight 4 ounces

About this item

  • This DC12V governor (JCF1201 type) can be controlled according to the ambient temperature of the fan speed, no manual control, automatic stepless speed, the higher the ambient temperature, the faster the fan speed control
  • Fit for 2,3,4 line 12V fan, stepless temperature control can be achieved.
  • Single temperature sensor, easier to use, more responsive control.
  • New dual-mode function: fixed temperature mode and adjustable temperature mode.
  • Board size: 45x25x30MM (LXWXH), Sensor probe length: 325mm
› See more product details

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DC 12V 1A Automatic PC CPU Fan Temperature Control Speed Controller Case Fan Governor
This item: DC 12V 1A Automatic PC CPU Fan Temperature Control Speed Controller Case Fan Governor
$10.99
Get it as soon as Wednesday, Dec 18
Only 8 left in stock - order soon.
Sold by Qianson and ships from Amazon Fulfillment.
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Customer reviews

4.4 out of 5 stars
41 global ratings
Worked for my project
5 out of 5 stars
Worked for my project
Exactly what I needed to get my fans to shut off when they weren't needed. Had to add extra fans to keep an amp cool but at full speed with the radio down they make a very noticable hum. This device allowed me to keep the fans off until they are needed to actually cool the amp
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Top reviews from the United States

Dan H.
5.0 out of 5 stars Very satisfied.
Reviewed in the United States on August 30, 2023
Verified Purchase
Very Satisfied.
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Heather Bowles
5.0 out of 5 stars All I can say is This is Magnificent!
Reviewed in the United States on January 24, 2020
Verified Purchase
I am a Dr and at my workstation where I prepare tools for surgery I needed a system to keep the tools cool while under light...my Husband and I hooked this up to two 120mm pc fans and it is purely amazing how accurate, easy, and useful it is. within 5 minutes we had the fan installed, working, and cooling the utensils to room temperature 0f 72 degrees while under a spotlight. Godsend of an item!.. P.S about 1 minute after the light is turned off, the fans stop as the temperature at prep table is back to normal room temperature.
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ACheung
4.0 out of 5 stars No Hyseresis Loop in the design
Reviewed in the United States on March 13, 2019
Verified Purchase
I attached the sensor to a heat sink and a cooling fan blowing at the heat sink. It seems that the design did not incorporate a hysteresis loop for different turn-on and turn-off set points. As a result, the fan turns on to cool the device, but moments later it turns off because the device is cooled below the set point, as soon as the fan stops, the device quickly heats up above the set point and the fan turns on momentary, then stop again .... and so the cycle repeats. You'll see that the fan turns on and off in short bursts continuously as the heat sink temperature vacillates around the set point. The overall setup works ok to keeps the heat sink from being too hot (that's why I give it 4 stars), but a hysteresis loop of two or three degrees built into the circuit will eliminate a lot of unnecessary fan stops and goes.
6 people found this helpful
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Techspec
5.0 out of 5 stars It has limited programability, but it does exactly what it is supposed to.
Reviewed in the United States on September 14, 2019
Verified Purchase
I use these to retrofit older computers that either do not have heat/speed control built-in or the circuitry has gone bad (It happen a lot more often than you might think).

It isn't necessarily built for this application, but I am also using one of these as a fail-safe control in an old From 250 truck. Works like a charm. I'm sure there are more applications I haven't discovered yet.
One person found this helpful
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Jeremy
5.0 out of 5 stars Worked for my project
Reviewed in the United States on January 12, 2020
Verified Purchase
Exactly what I needed to get my fans to shut off when they weren't needed. Had to add extra fans to keep an amp cool but at full speed with the radio down they make a very noticable hum. This device allowed me to keep the fans off until they are needed to actually cool the amp
Customer image
Jeremy
5.0 out of 5 stars Worked for my project
Reviewed in the United States on January 12, 2020
Exactly what I needed to get my fans to shut off when they weren't needed. Had to add extra fans to keep an amp cool but at full speed with the radio down they make a very noticable hum. This device allowed me to keep the fans off until they are needed to actually cool the amp
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Customer imageCustomer image
One person found this helpful
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Robert Talley
3.0 out of 5 stars Functional controller but needs instructions.
Reviewed in the United States on January 2, 2021
Verified Purchase
Good construction except for only one hole for mounting and long exposed leads on bottom. No instructions provided. Advertised as a 12V fan controller but has +12V and -12V as inputs. No way to tell the fan on trigger temperature except by testing.
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Brian
5.0 out of 5 stars Great BUT!
Reviewed in the United States on June 28, 2021
Verified Purchase
This item does exactly what I bought it for .
But it didn't come with any documentation.
Thanks to some previous buyers on Amazon they posted some that they found.
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Phuong Ta
5.0 out of 5 stars Awesome little CPU fan controller
Reviewed in the United States on March 27, 2018
Verified Purchase
Awesome little CPU fan controller. I have it paired up with a 120mm fan, and it ramps up nicely when I set the threshold to about 40c.
2 people found this helpful
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