4000W Motor Speed Controller, Motor Control Board AC 110V Adjustable Voltage Regulator SCR High Power Dimmer Controller Temperature Governor Dimming Monitor

Easy to install

DATE ORDERED: 02/06/24DATE RECEIVED: 02/14/24DATE OF REVIEW: 03/10/24PERSONAL BUY/PRODUCT TO REVIEW: Personal BuyDELIVERY: UPS - Well packaged with additional itemsQUALITY: Well, it 'looked' pretty good. But it died on the first day.INTENDED PURPOSE: The plan was to use this device to control 2 small heater strips. Total load 15 Amps (7.5 amps each) on a 120V circuit. Total wattage of 1800W (900 watts each) on a 4000W advertised product. It should have been able to handle this load with no problem based on the ratings advertised.RECOMMENDATION: On the first test, the switched worked. On the second test, it did not. This was a purely resistive load. Not an induction load. I started with the switch in the low position and slowly ratcheted upward to full. Like I said, it worked the first time. I thought I would be pleased. The second time, it locked into the high setting only. I should have expected this. Junk from China. I'd ask for a refund or replacement but that would be like pulling teeth with with a fork. Lesson learned. I rate this product as a DO NOT BUY!

Bought and rebought this item. First one worked great. The second one looked exactly like the first but for a different color of peel off protective plastic wrap. But,,, the inputs and outputs were reversed! I didn't catch that and burned out a motor. I won't make that mistake again.

I've been working with scrs and triacs since the 1970s. I know how to use them. I wired this up carefully, paying attention to the warning that the inputs and outputs could be reversed from left to right. I connected it to a motor with a maximum load of 1,400 Watts. However it's never been my intention to run it at full power. At reaching the minimum control activation, the fuse blew like a Fourth of July fountain. I also have some variac type variable transformers rating at less than a thousand watts that do a perfect job of controlling this motor and do not overheat. I'm going back to using them. Old technology is sometimes the best. The refund did not require a return so I opened it up. First off, the fuse did not protect the Triac. It's toast. Second, the circuit seems unnecessarily complex for a basic motor controller. Regardless, it was beyond repair, and not valued enough by the vendor to require a return.

Did not work. Do not recommend

Quit working on the second use. This is garbage, and a waste of money.

Constantly blows fuses

Its range was adequate, fuse protected is bonus.I did miswire it, no damage to this device. Solid & tuff