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: 771749047

Details

Brand
SDRGEEK
Colour
Black
Item Weight
1.08 Pounds
Material
Metal
Product Dimensions
11.4L x 10W x

⚡4000W max power output

🔧Adjustable 0-220V output voltage

🛡️All-aluminum heat sink for superior cooling

Description

⚙️ Master your motor’s speed with power and precision!

BUILT TO ENDURE - Robust metal casing with advanced heat dissipation ensures long-lasting reliability.
SAFETY FIRST ALWAYS - Zero hysteresis and peak absorption circuit protect your device from spikes and surges.
POWER MEETS PRECISION - Seamlessly control motors and fans with up to 4000W resistive load capacity.
VERSATILE COMPATIBILITY - Perfect for routers, fans, heaters, and more—engineered for industrial and home setups.
TAILORED VOLTAGE CONTROL - Fine-tune output voltage from 0 to 220V for ultimate customization.

The SDRGEEK AC Variable Speed Controller offers adjustable voltage control from 0 to 220V with a maximum current of 15A and power handling up to 4000W resistive load. Featuring high-quality SMD thyristors, an all-aluminum heat sink, and a durable metal casing, it ensures efficient cooling and safety. Ideal for controlling fans, routers, heaters, and small motors, this controller delivers reliable, precise speed regulation for professional and industrial applications.

Specifications

ASIN	B0C2VLSVR5
Brand Name	SDRGEEK
Colour	Black
Country of Origin	USA
Customer Reviews	3.9 3.9 out of 5 stars (129)
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	1.08 Pounds
Manufacturer	SDRGEEK
Material Type	Metal
Model Number	SD-4000W-01
Number of Items	1
Part Number	SD-4000W-01
Unit Count	1.0 Count

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