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: 537532995

Details

Brand
SDRGEEK
Color
Black
Item Weight
1.08 Pounds
Material
Metal
Product Dimensions
4.49"L x x

⚡15A max current

🔥4000W max resistive load

🔧0-220V adjustable output

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€ 62.32

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Sold byAmazon PortugalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

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

INDUSTRIAL GRADE SAFETY - Zero hysteresis with peak absorption circuit plus grounded metal casing for ultimate protection.
PRECISION POWER CONTROL - Seamlessly adjust voltage from 0 to 220V for tailored motor and appliance performance.
ROBUST HIGH LOAD HANDLING - Supports up to 15A current and 4000W resistive power, perfect for demanding industrial and home setups.
PREMIUM THERMAL MANAGEMENT - All-aluminum heat sinks and FR-4 circuit boards ensure durability under high temperatures.
VERSATILE APPLIANCE COMPATIBILITY - Ideal for fans, routers, heaters, and motors—empower your workspace with reliable speed control.

The SDRGEEK AC Variable Speed Controller is a high-performance SCR voltage regulator designed for 120V/220V inputs, delivering up to 15A current and 4000W resistive load capacity. Built with premium SMD thyristors, aluminum heat sinks, and durable FR-4 circuit boards, it offers precise voltage adjustment (0-220V) and robust protection features including zero hysteresis and peak absorption circuits. Perfect for controlling speed in fans, routers, heaters, and small motors, this metal-cased controller ensures industrial-grade safety and reliability for professional and home applications.

Specifications

ASIN	B0C2VLSVR5
Best Sellers Rank	#293,238 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #233 in Electrical Motor Controls
Brand Name	SDRGEEK
Color	Black
Customer Reviews	3.9 3.9 out of 5 stars (129)
Display Type	LCD or LED
Included Components	controller
Item Dimensions L x W x H	4.49"L x 3.94"W x 3.15"H
Item Weight	1.08 Pounds
Manufacturer	SDRGEEK
Material Type	Metal
Model	SD-4000W-01
Part Number	SD-4000W-01
Smart Home Compatibility	Not Smart Home Compatible
Unit Count	1.0 Count

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