Could someone tell me the frequency that this dimmer's pwm module operates at? my eyes are susceptible to led flicker. 60hz would be way too slow.

I just measured mine with an oscilloscope. It switches at 1200 Hz, which is lower frequency than I would’ve expected for a PWM switch. The minimum on period is about 5%, and the maximum is about 92%. Mine has a voltage drop (PWM +Mosfet RDSon) of approximately 1 V with a 14 amp load. it is probably in excess of 1.5 V at it’s rated load (30A). I use a Meanwell 15 volt 200 watt power supply set to 13.2 volts to get full brightness from my 12 V / 14 amp LED string. If you go this route, the voltage adjustment is a small potentiometer next to the terminal block on the power supply.

Will this work on a 18 w 12 v led light?

Yes and these dimmers work very well. I have 2 of them and they control 50 ft. of lights each. They are very "smooth" in dimming. Not all jumpy like others..

I wire from the battery to the "in" side and to the lights (strip led) on the "outside" of the controller. Works once then it won't dim?

I would send it back. Must be defective. Mine work fine

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SUPERNIGHT LED Light Strip Dimmer, DC12V-24V 30A PWM Dimming Controller for Dimmer Knob Adjust Brightness ON/Off Switch with Aluminum Housing

Product ID: 87748577

Details

Brand
SUPERNIGHT
Connector Type
Clamp
Contact Type
Normally
Current Rating
30 Amps
Item dimensions L x W x H
3.54 x 2.56 x
Material
Metal

⚡Supports up to 30A current

🔆0%-100% PWM dimming range

🛠️Durable aluminum housing

100.73 DT

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Description

💡 Turn the dial, own the vibe — light control redefined.

BUILT TO LAST - Premium aluminum casing ensures superior heat dissipation and corrosion resistance.
LED LIFESAVER - PWM dimming technology protects your LED strips from damaging rush currents.
HASSLE FREE INSTALLATION - Screw-in terminals and pre-drilled mounts make setup quick and secure.
POWERHOUSE COMPATIBILITY - Handles up to 30A, ideal for robust DC12V-24V LED strip setups.
SEAMLESS BRIGHTNESS CONTROL - Effortlessly dial your perfect ambiance with smooth 0%-100% PWM dimming.

The SUPERNIGHT LED Light Strip Dimmer is a high-performance PWM controller designed for DC12V-24V LED strips, supporting up to 30A current. Featuring a rotatable knob for precise 0%-100% brightness adjustment, it boasts a durable aluminum housing for excellent heat dissipation and corrosion resistance. Its PWM technology safeguards LED strips from rush currents, while easy screw-in terminals and mounting holes ensure quick installation. Perfect for professionals seeking reliable, customizable lighting control.

Specifications

ASIN	B07HN1BJWK
Actuator Type	Rotary
Best Sellers Rank	#19,248 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #45 in Dimmer Switches
Brand Name	SUPERNIGHT
Circuit Type	1-way
Color	Black
Connectivity Protocol	Wi-Fi
Connector Type	Clamp
Contact Material	Aluminum
Contact Type	Normally Closed
Control Method	App
Controller Type	Mechanical knob
Current Rating	30 Amps
Customer Reviews	4.3 4.3 out of 5 stars (651)
International Protection Rating	IP44
Item Dimensions	3.54 x 2.56 x 1.57 inches
Item Weight	0.01 Ounces
Manufacturer	SUPERNIGHT
Material Type	Metal
Model	7539579860
Mounting Type	Surface Mount
Number of Items	1
Number of Positions	1
Operating Voltage	12 Volts
Operation Mode	ON-NONE-OFF
Part Number	BKC1265-GM
Smart Home Compatibility	Not Smart Home Compatible
Switch Type	Kill Switch
Terminal	Through Hole
Unit Count	1 Count
Upper Temperature Rating	80 Degrees Celsius
Wattage	720 watts

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100.73 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

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

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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Excellent communication throughout the order process. Product is perfect.

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