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

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

🔥All-aluminum heat sink for cooling

🔧0-220V adjustable output

49.39 OMR

Duties & taxes included

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Description

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

BUILT TO ENDURE - Premium SMD thyristors and FR-4 heat-resistant circuit boards ensure long-lasting, reliable operation under heavy loads.
COMPACT YET MIGHTY - Lightweight metal casing with robust phosphor bronze fittings fits easily into any setup while delivering up to 4000W power.
SAFETY FIRST ALWAYS - Zero hysteresis and peak absorption circuits protect your device from spikes and overheating—engineered for peace of mind.
POWER MEETS PRECISION - Seamlessly control output voltage from 0 to 220V for tailored motor and appliance performance.
VERSATILE INDUSTRIAL COMPATIBILITY - Perfect for fans, routers, heaters, and small motors—empower your workspace with adaptable speed control.

The SDRGEEK AC Variable Speed Controller offers adjustable voltage control from 0 to 220V with a maximum output power of 4000W for resistive loads and 1500W for inductive loads. Featuring high-quality SMD thyristors, an all-aluminum heat sink, and advanced safety circuits, it ensures reliable, efficient, and safe operation for a wide range of industrial and home appliances—excluding smart devices. Compact and durable, it’s the ultimate tool for professionals seeking precise motor speed management.

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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