Taidacent 2510-4P 3P Manual 4 Wires 0-5V 12V Fan Speed Controller PWM Speed Control On Off Switch for PC CPU Case Fan with Knob (Solder Connector with Plastic Black Knob)

I'm using this to run a small PC fan off of a 12v source, and it's been working beautifully. Though it can turn the fan off and on using the dial, it also works fine if you use an external switch, which was what I needed. It just brings the fan up to the set speed when you turn it on. The dial and fan connector are good quality and the wires are the right gauge.

Price rate, work as advertised. I’ve been using it for over a year and haven’t had any quality issues.

I was unable to control speed on a 4 wire blower. On/off only. No speed control. But I found on our fan that the PWM wire was YELLOW and the Tach wire was BLUE. After switching it works very good!

I use this product in combination with an Industrial Noctua 4 pin PWM 12V fan to control the speed of a ducted ventilation system. The first feature of value is the red LED that indicates when power is being sent to the fan. The second feature of value is the prominent marker on the rotating knob which provides excellent feedback as to what percentage of the range you currently have selected. The third feature of value is by far the most important. It provided uniformly progressive speed control to the point that the fan turned slowly at its lowest speed. This information was determined by first running the fan with a variable voltage lab power supply and varying the voltage to change the speed. I measured in 1 volt increments from 15 volts down to the point the fan stopped turning. This low-speed point was 5 volts and .19 amps. In stark contrast, this PWM device kept the blades spinning smoothly down to .05 amps. After that point, there was a distinctive click and the red LED turned off. I did not have to alter the potentiometer setting to achieve this perfect performance. The fourth feature of value is the wiring configuration. The red and black wires are easily attached to a very wide range of 12 volt power sources, not just computer chassis. I will continue to use this PWM controller in all of my future builds. I can’t think of any improvement that is needed. In addition, the price is very competitive.

For me this is perfect, but my tested limitations are it was unable to control the one Noctua but otherwise only 3-pin fan I have and tested, and my 4 pin PWM Watahai blower fan on this board's lowest dial setting sounds more like 30% rather than 10%. I've heard it go lower when plugged into a computer. My 80mm Arctic fan and others seemed to scale linearly to the dial setting though. Besides that, this is what i was looking for; a PWM computer fan controller that runs off of any 12v DC source and not USB. I wanted this to repurpose an old Xbox one fan to cool an inverter case for a battery bank, so I had to hack up fan cables and find pinouts then solder to get plug and play perfection but this works great with almost all of my numerous 4 pin PC PWM fan I have. If you want adjustable or set it and forget it 12v fan control for your projects, this is fantastic. I don't think it supports 3 pin fans though it could just be my particular 65mm Noctua fan. For how simple it is I don't think $10 is a rip off but it also seems like it could be at least a little less. Highly recommended nonetheless