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Black rectangular power adapter with 5.5×2.1mm barrel jack and integrated wall plug

BTF-LIGHTING 12V 3A 36W Power Adapter 5.5x2.1mm Jack

SKU CH-JT78-72BHN

A 12 V 3 A 36 W power adapter with a 5.5 × 2.1 mm barrel jack for LED strips, CCTV cameras and other 12 V devices

  • Type9 V
  • Changer TypeUSB C Charger
  • ColorBlack
  • Specifications36 watts, 12 volts, 3 amps, 220 volts_of_alternating_current
  • Connector ABarrel Connector
  • Connector BBarrel Connector
  • ETL certified for verified electrical safety
  • Multiple protection circuits prevent overload and short circuits
  • 100-240V AC input works worldwide
  • 5×2.1mm barrel jack fits common 12V devices
  • Plug-in design needs no wiring or soldering

12V 3A 36W Power Adapter

This 12V 3A 36W power adapter converts AC 100-240V input to 12V DC output at up to 3 amps. It features a standard 5.5x2.1mm barrel jack and includes a female DC barrel connector. The unit is designed for indoor use only with an IP30 rating. It suits 12V electronic devices requiring up to 36W of power.

ETL Certified Safety Features

The adapter holds ETL certification alongside CE, FCC, UKCA, and RoHS compliance marks. Built-in protections include automatic overload cut-off, over-voltage cut-off, automatic thermal cut-off, and short-circuit protection. High-quality electric components ensure reliable operation. The plug-and-play design requires no hardwiring or soldering for installation.

Replaces Generic 12V Suppliers

This unit replaces unbricked 12V power bricks that lack certified safety circuitry or stable voltage regulation. The upgrade is worth it when powering addressable LED strips such as WS2815, SK6812, WS2805, or WS2814 models, plus CCTV cameras and security systems. It is not suitable for outdoor installations or devices exceeding the 36W limit.

Highlights

  • ETL certified for verified electrical safety
  • Multiple protection circuits prevent overload and short circuits
  • 100-240V AC input works worldwide
  • 5×2.1mm barrel jack fits common 12V devices
  • Plug-in design needs no wiring or soldering

Specifications

BrandDell
SeriesQZT-1203000
ModelQZT-1203000
Part NumberP12V3A
Type9 V
Changer TypeUSB C Charger
ColorBlack
Specifications36 watts, 12 volts, 3 amps, 220 volts_of_alternating_current, Barrel Connector, 60 hertz, type_a_2pin_na, 0, Cameras, QZT-1203000
Connector ABarrel Connector
Connector BBarrel Connector
Cable Jakcet TypePlastic
Connector StyleMale
FeaturesCameras, Barrel Connector, Corded Electric, 0, DC, 36 watts
Dimensions14.33in W x 12.83in H x 9.06in D
Weight0.12 kilograms
Package Quantity1
Package Contents1 unit

Questions about this item

How do I install the 5.5x2.1mm barrel plug on my 12V LED strip without reversing polarity?

Plug the male barrel connector into the strip’s female DC jack; the centre pin is positive and the outer sleeve is negative — reversing them will prevent the strip from lighting.

Which component of this 36W adapter is most likely to need replacement after long-term indoor use?

The internal electrolytic capacitors degrade with heat cycles; when the 12V 3A output becomes unstable or ripple increases, the whole unit should be replaced.

What limit appears first when this IP30 supply runs continuously at 3A in a warm enclosure?

The automatic thermal cut-off triggers once internal temperature exceeds the design threshold, shutting down the 12V output until the unit cools.

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