Gino Development 09-0123 TruePower Variable Dial Router Speed Controller for Duct and Inline Fans

This was the perfect item for my project! I can actually hold this in one hand and rotate the knob to adjust my speed with a thumb and index finger, freeing-up my other hand. Plenty of heavy cord. (bit stiff but I'm not gigging it for that). I use the rocker switch considerably and it's not failed yet! The switch, for my needs, feels just right to move on and off; doesn't need a lot of force. I built a pro-type special tool using an old palm sander (with brushes) and needed something to slow down it's10,000 VPM. I can slow it down to a hum, then easily turn the knob and raise the VBM to what ever fits the need. If it would help your situation:Con: Speed control knob has little resistance to rotate. It would no-doubt move if drug around getting bumped.Pro: Seems to stay/hold in-place, well, at any setting while it's in my hand or I'm moving it around. I ended-up needing to hold it in one hand with my fingers turning the knob to throttle the VPM's up or down. Worked perfect!

This simple variable speed switch does what it is supposed to do. it gives a good range of speeds from a very low speed up to the normal full power of the motor in question. It works as a rhiostat, like the dimmer switches you may have seen on lights in a house. Rhiostats function as variable resistors, decreasing the current inversely with increasing resistance. To put that in english, on low, the plugged in device will get less power and the light will get dimmer (assuming that it is dimmable) or the motor will move slower (assuming that it is a brush type motor). I have tried this controller on several devices and it has worked well. With one fan that i used this on, the lowest settings were too low to start the motor. This is actually normal. most motors take a certain current to kick on and often use capacitors to provide a high initial charge to start the motor and then run at normal currents. The work around, if you need a lower lowest speed, might be to start the motor on a higher speed and adjust it down. This particular model has a grounded outlet, which is a major plus because you don't need an adapter to plug in a three prong plug. Just remember to plug in your device and turn its switch to its highest speed to get the full range of adjustment from it. From there, be creative. This works with fans, lights and other basic motors and it is an absolute blast to use with a magic wand. The only reason that this controller gets a 4 star rating instead of a 5 star rating is that there is no digital readout on this model to give you a percentage of total power that you have it adjusted to.

Bought this to dim 1000W lights. It makes them make a buzzing sound. If you buy this for tools I guess it works fine but as a dimmer its really bad.

I got this unit immediately after I had to return a store-bought (identical unit, by the way) to the Harbor F. It works great with my Porter Cable router and with my Harbor Freight 2.5 HP router. You need one of these if you use larger diameter router bits. I have a slot cutter that warns against running above 14,000 rpm. This motor controller does the trick. It is intended for brush-style motors, so check the item you plan to control. If your item does NOT have those little screw-in ports on the sides, then your item is not a brush-style motor and you will need another style motor speed controller.Anyway, just when I though everything was cheaper at the Harbor, along comes this unit at a much lower price. Now pardon me whilst I get back to making sawdust at 14,000 rpm.

I'd like to say this was as good as the other reviewers say it is, but not for me. I'm using this for a small pump motor and High on the Rheostat is not the same as when it's switched to full. That, plus the fact that the Rheostat skips and loses power in a few places in the High Zone. It does the job for me, but it could have been more fluid as the dial is rotated instead of skipping.Addendum - February 17, 2013 - Very disappointed. The cover to the knob of the rheostat fell off. The skipping has turned into near non-functioning of the rheostat. It works on again, off again, with mostly dead spots and an occasional response. I'm using this with a water pump and don't know if that's the problem, but it has certainly become pretty much unusable without having to repetitively turn the knob and play with the switch to get it to work.I've changed my rating from a 3 star to 1 star.

Great speed controller....the best one I have ever owned. I use it in my workshop on my router and also to control air movement without disturbing a lot of dust. I don't need a tornado while I'm working! I also use one of these to control the exhaust fan speed. It has a 6 foot 120 vac input cord and the receptacle for the item you want to control. is right next to it. This is NOT for digital motors, only motors that have brushes in them. Complaints of it getting too hot...mine doesn't, maybe the load is too great for those who have it heating up too much. I have used it on a router for almost 5 hrs straight numerous times and have experienced absolutely no problems.

I am an inventor and purchased it to slow down my Dremel tool (uses brushes in motor) when forming plastic. It did not work. Dial does not control the speed through speed ranges....it is not sensitive to speed changes. Works at highest speed...but not always at ANY other speed.

Works good to slow down my RotoZip rotary tool so I can use it with Sanders and wire wheels. Offers enough resistance at max absorption to slow down the motor to get safe speed for accessories that can't spin at the height of motor rpm design. This makes the RotoZip ten times more functional and gives higher speed tools much more use then previously used. It's nice looking and feeling but it's not.overkill overbuilt and is lasting quite well after much use.

good device too bad it doesn't go lower that 50 volt.