HiLetgo 2000W PWM AC Motor Speed Control Module Dimmer Speed Regulator 50-220V Adjustable Voltage Regulator

For everyone who is curious about how it works. I wired this up to a 60w incandescent light and observed the wave. This appears to he a triac controlled device, when the dial is turned down cuts the sine wave down, when it's turned up, it allows it to go up. At full speed the wave is still partially cut but only slightly, that's just because of efficiency. This works great on my CNC shop vac, and other universal motor speed controls. Works great on resistive loads like motors, light bulbs, and probably AC heaters too (depending on the type). (Does not work on led light bulbs as they function different internally). For those of you who want to use this to vary the voltage, this won't work. The rms voltage will change a little but since the sine wave is only shortened it will still hit the high voltage levels of ~169v peak unless the wave is shortened to just a tiny piece of it. When I initially tested this is was giving full voltage full duty Cycle the whole time, it wasn't until I put a resistive load on the device that it actually began working. I have several of these because for my uses they work fantastic.

Contacted Toro to buy a new switch but they will not sell it; I am assuming for liability reasons. So I bought this and installed it successfully. I did have to trim some plastic in the mounting area of the old switch and splice some wire but I used the leaf blower all last fall without a problem. Now this year (2021) I went to use it and it failed. I started trouble shooting the board and found that the BTA16 Triac was blown. I had some so I replaced it and found the the speed was no longer controllable and blew another BTA16-600B Triac. I then started to test the other components and found that both of the resistor pots are bad. I think the components poor quality and the heat sink cannot handle the heat of the TRIAC.

I bought one of these to lower the voltage on some strings of old Christmas lights to prolong the bulb life. They will only draw about 2A so the unit will not overheat. However, upon examining the product I see that it uses a BTA16 triac that is rated for 16A RMS, not the claimed 25A RMS, so that resulted in the 4 star rating instead of a 5 star. I also doubt it could control 2000W without a fan cooling it without burning out. In this type of controller the limiting factor is going to be heat removal because the heatsink is very small. As an experiment I connected it to a Christmas tree with lights that consume 5.2A at 120VAC (measured with a clip-on ammeter) to see how hot the heatsink got. As expected, it got over 224F (the room was 68F) within a few minutes (hotter than boiling water) and hotter than I would feel comfortable with. The semiconductor chip inside the triac chip is running even hotter, probably by 15F or so, so that is getting close to the maximum operating temperature of 150C for the triac. I feel comfortable using it with my 2A Christmas lights string but I personally wouldn't go much above that. Assuming that you use the unit at lower currents I think this is a great value. It is well packaged and works fine. However, it has wiring connections with the AC line voltage exposed, very unsafe around young children or pets, so it should really be in some sort of protective enclosure. It would not be easy to enclose it since there are no mounting holes on the circuit board and enclosing it could result in even higher temperatures unless the enclosure had good ventilation including possibly a cooling fan.

This product is better suited to control a resistive load than an inductive load. It will reduce an AC motor's speed but the control speed range is very limited. The motor slows but hums loudly as soon as the speed reduces and all of the control is in the last few degrees of the turning the knob. Tthere is nothing wrong with the device, it's just not well suited for induction motors.

It works perfectly controlled the water flow rate of Gevi espresso maker. This replaced the previous mod dimmer (SC-239A 200 Watt Dimmer Switch for Westek 6077B, 120V Rotary Knob Control) that did not control the water flow rate because the electric supplied not enough to move the pump’s piston. Espresso tastes as good as coffee from shop with high end machine.

Being in the electrical field and working around motors I had a good feeling this would not work, but I thought what the heck, its only 5 bucks so I will give it a try. I have a single phase .5 HP 110V 1725 RPM motor I wanted to use on a pig roaster so need to reduce the speed way down. Got it hooked up correctly and it only reduces the speed to maybe 1000 RPM. If you reduce it any lower the motor goes into whats called slip speed where the motor loses relative motion causing a jerking motion on the motor that doesn't stop until u increase the voltage some. Its not voltage that increases or decreases the speed on a single phase motor, its line frequency which is Hz You need a VFD which changes the line frequency to reduce the speed of a single phase motor, not a volate regulator. Yes this may work on lights as a dimmer but you cannot control speed with it so I would suggest you change the advertising of this to just a dimmer not a AC motor speed control.

AC booster fan adjustment speed

I bought this little controller to slow down a 110 vac exhaust fan about 10% or so. It was very noisy. I mounted it into a single gang box and it seems like it gets hot in there so I will probably have to vent the box somehow. But it works! It works good. There are no instructions and I read some of the other reviews so I was careful wiring it up. I adjusted the on board pot and I have full range control on the main pot. I am happy with my purchase. It fixed my noisy fan for 7 bucks! Now when I turn the fan on I blip it to 100% for a second then I adjust it to about 50%. It works great!

Ne pas acheter reçu. Mais ne fonctionne pas et le fournisseur ne veut rien savoir il dit qu'ils sont testée et que c'est nous qui ne savons pas s'en servir ils nous prennent vraiment pour des tocards.aucun retour possible pour échanger et aucun remboursement super !!! Un produit défectueux de mauvaise qualité. A éviter

Did the trick on my ceiling fan that was not variable speed

It is a good product for controlling the speed of drill machines, grinders, and other similar power tools. It works well for adjusting the speed according to the requirement.”

El producto está bien permite regular el voltaje de aparatos de 220v. En mi caso se trata de un motor al que tenía que bajarle las revoluciones de 13000rpm a cerca de 5000 rpm/m. Lo he podido utilizar gracias a un regulador que lleva en el interior para bajar o subir el voltaje de entrada según lo que sea necesario. Es sencillo pero funciona. Instalarlo es fácil, dos cables de entrada y dos de salida hacia el aparato a regular.No trae instrucciones. Es frágil y hay que ir con cuidado al instalarlo. No se lo que durará pero de momento por el precio está bien. Ah, envían dos unidades. Es solo para 220-230v.

V.good product