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 DC 12V-24V 30A PWM LED Light Strip Dimmer for Dimmer Controller Dimmer Knob Brightness On/Off Switch with Aluminum Housing for Single Channel 5050 3538 Single Color Tape

SUPERNIGHT DC 12V-24V 30A PWM LED Light Strip Dimmer for Dimmer Controller Dimmer Knob Brightness On/Off Switch with Aluminum Housing for Single Channel 5050 3538 Single Color Tape

Product ID: 767702850

Details

Brand
SUPERNIGHT
Color
Aluminum
Item Weight
0.01 Ounces
Material
Aluminum
Unit Count
1.0 Count

⚡Supports DC 12V-24V up to 30A

🔆0%-100% full range dimming

🛡️Aluminum housing for heat & corrosion resistance

R2071

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Description

💡 Illuminate your space, control your vibe with precision and style!

SMART LED PROTECTION - PWM digital dimming prevents flicker and extends your LED strip’s lifespan by avoiding current spikes.
EFFORTLESS INSTALLATION - Pre-drilled mounting holes and screw terminals make setup quick and hassle-free—no electrician needed.
ROBUST RELIABLE BUILD - Durable aluminum casing ensures your dimmer thrives in demanding environments without overheating.
WIDE VOLTAGE COMPATIBILITY - Seamlessly powers single-color LED strips from 12V to 24V with up to 30A current capacity.
PRECISION BRIGHTNESS CONTROL - Swivel knob lets you dial in perfect lighting from subtle ambiance to full brilliance.

The SUPERNIGHT DC 12V-24V 30A PWM LED Light Strip Dimmer offers full-range dimming with a smooth swivel knob, housed in durable aluminum for superior heat dissipation and corrosion resistance. Compatible with single-channel 5050 and 3538 single-color LED strips, it supports up to 30A current and features PWM digital dimming to protect your LEDs from flicker and damage. Easy to install with pre-drilled holes and screw terminals, it’s the perfect upgrade for professional-grade lighting control.

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R2071

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered 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 South Africa.

Secure transaction

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ASIN	B07HN1BJWK
Brand Name	SUPERNIGHT
Color	Aluminum Dimmer
Customer Reviews	4.3 4.3 out of 5 stars (605)
Item Weight	0.01 Ounces
Manufacturer	SUPERNIGHT
Material Type	Aluminum
Model	7539579860
Part Number	BKC1265-GM
Unit Count	1.0 Count

SUPERNIGHT DC 12V-24V 30A PWM LED Light Strip Dimmer for Dimmer Controller Dimmer Knob Brightness On/Off Switch with Aluminum Housing for Single Channel 5050 3538 Single Color Tape

Details

Details

Description

Specifications

Common Questions