does support a small water pump? I already have a similar one in my water pump, but this one,in the description says it doesn't support it, why?

You have to start the motor at 100% and then back it down to the desired RPM. I am running a one horsepower buffer on mine and you can definitely tell when you put too much pressure on it that the motor wants to stall. I would think a water pump would take a lot of amps and not like being slowed down.

so i could use this to control the speed on a bench sander / grinder or a bandsaw?

I don't think so...I will control things like a shop vac or router...something this is a DC motor that is supplied with AC...

I have an angle grinder, will this work with it? Thanks

Yes, the voltage of the angle grinder can be adjusted If you have any questions, please contact our email: Bosun128888@outlook.com

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AC Variable Speed Controller, 120V~220V 15A 4000W SCR Voltage Controller for Router Fan Electric Motor Rheostat

AC Variable Speed Controller, 120V~220V 15A 4000W SCR Voltage Controller for Router Fan Electric Motor Rheostat

Product ID: 556881821

Details

Brand
SDRGEEK
Colour
Black
Item weight
490 g
Material
bronze copper
Product dimensions
11.4L x 10W x

⚡4000W max resistive power

🔥15A max current capacity

🔧0-220V adjustable output

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Description

⚙️ Master your motor’s rhythm with precision power control!

SAFETY FIRST DESIGN - Equipped with zero hysteresis, peak absorption circuits, and grounded metal casing for reliable protection.
ROBUST POWER HANDLING - Supports up to 4000W resistive and 1500W inductive loads for versatile applications.
PRECISION VOLTAGE CONTROL - Seamlessly adjust output from 0 to 220V for tailored power delivery.
INDUSTRIAL GRADE DURABILITY - Built with high-quality SMD thyristors and all-aluminum heat sinks for superior heat dissipation.
WIDE APPLIANCE COMPATIBILITY - Perfect for fans, routers, electric stoves, and motors—empower your workspace with precise speed control.

The AC Variable Speed Controller is a heavy-duty, adjustable voltage regulator designed for 120V-220V inputs, delivering up to 4000W resistive power and 15A current. Engineered with premium SMD thyristors and robust heat sinks, it ensures safe, reliable operation with zero delay and advanced protection circuits. Ideal for controlling speed and power in fans, routers, electric stoves, and various motors, this controller offers professional-grade performance for demanding industrial and DIY applications.

Specifications

ASIN	B0C2VLSVR5
Brand Name	SDRGEEK
Color	Black
Customer Reviews	4.0 4.0 out of 5 stars (125)
Display Type	LCD or LED
Included Components	1 x Fan Speed Controller
Item Dimensions L x W x H	11.4L x 10W x 8H centimeters
Item Weight	490 g
Manufacturer	SDRGEEK
Material Type	bronze, copper, iron, metal, aluminum
Model	SD-4000W-01
Part Number	SD-4000W-01
Smart Home Compatibility	Not Smart Home Compatible

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€ 112.08

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In stock

Sold byAmazon GERMANYDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Desertcart purchases this item on your behalf and handles shipping, customs, and support to GERMANY.

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TrustScore 4.5 | 7,300+ reviews

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