RioRand Low Voltage DC 1.8v 3v 5v 6v 12v 15V Motor Speed Controller 2A PWM 2PCS

I am using this for my Monoprice Mini Delta which had a very loud fan at the base of the printer. With this I can control the fan speed very well. I actually just have it where the fan is at a low speed, and the PWM just tossed in with the 3D printers' electronics (I made sure it would not short accidentally) and have not modded the exterior case where I can just adjust the speed on the fly. Maybe in the future.

Very nice product. I work with my 5VDC motor without any problem.

Our samsung LCD tv was overheating and turning itself off and back on all the time. Took it to a repair shop and the guy installed three 12V fans to keep it cool. Only problem was the fans were too loud. Bought this and installed it between the tv and the ac/dc converter box and it works perfectly. I can dial the fanspeed down to a noise level that is tolerable now.

I purchased a 12 VDC water pump and needed to be able to control the voltage to get the appropriate pump output. The pump could be throttled down to 6 VDC and after some experimenting I decided that 9 VDC was appropriate for my project need. I then purchased a 9 VDC supply and have this unit available for the next project.

Works as advertised. Parts came in perfect working condition. I've used them on and off for about 12 operating hours at varying voltages with no issue. Love how compact and neat they are.

I needed to slow some gear motors down for a diorama. These came quickly, were super simple to install, and have worked flawlessly. Good bargain.

I used to control the speed of a trim servo on my RV7 homebuilt airplane.

I broke down a portable water flosser and used this to create a wall mounted water flosser that didnt rely on batteries or a water tank. This unit provided the adjustable motor speed which translated to variable pressure at the head so I didn't saw my teeth in two. This controller really tied my project together, but i noticed that periodically the voltage spontaneously drops without adjusting the knob. This resulted in drops in pressure then a sudden hard jet straight to the Uvula.

as advertised

ok

Tiny but works fine.