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Compact black wall power adapter with 5.5x2.1mm barrel connector

Lei Electronics Inc.

Lei Electronics Inc. MT12-Y090100-A1 12V 1A 5.5x2.1mm power adapter

SKU CH-TJWE-0P5QK

Supplies 12 V at 1 A through a 5.5 × 2.1 mm barrel connector from 100–240 V AC input

  • Worldwide voltage compatibility from 100-240V input
  • Delivers steady 12V 1A output for reliable device power
  • Standard 5.5x2.1mm barrel connector fits many devices
  • Built-in safeguards against short circuit and overheating
  • Genuine LEI manufacturing ensures consistent quality and safety

12 V 1 A wall power supply

This LEI MT12-Y090100-A1 adapter converts 100-240 V mains input into a regulated 12 V DC output rated at 1 A. It terminates in a 5.5 × 2.1 mm barrel connector and includes built-in safeguards against incorrect voltage, short circuit and internal overheating. The unit is supplied new in bulk packaging without a retail box.

Who this suits and who should look elsewhere

It suits anyone replacing a lost or faulty 12 V 1 A supply that uses a 5.5 × 2.1 mm centre-positive plug. Buyers whose equipment needs a different voltage, a higher current rating, a locking connector or a different barrel size should look at another model.

What to check on your existing setup

Verify that the original power supply specifies exactly 12 V output and a current draw no greater than 1 A. Confirm the device uses a 5.5 mm outer diameter and 2.1 mm inner diameter barrel jack with centre-positive polarity. Ensure the mains socket provides 100-240 V AC at 50-60 Hz.

Highlights

  • Worldwide voltage compatibility from 100-240V input
  • Delivers steady 12V 1A output for reliable device power
  • Standard 5.5x2.1mm barrel connector fits many devices
  • Built-in safeguards against short circuit and overheating
  • Genuine LEI manufacturing ensures consistent quality and safety

Specifications

ModelMT12-Y090100-A1

Questions about this item

What mains voltage and frequency range does the MT12-Y090100-A1 accept?

The adapter accepts 100-240V AC at 50-60Hz, so it works on most household supplies worldwide.

My device has a 5.5 mm outer and 2.1 mm inner barrel jack — will this connector fit?

Yes, the output plug is a 5.5x2.1 mm barrel connector that matches that jack size.

How can I confirm the adapter is delivering 12 V at 1 A after I plug it in?

Measure the output with a multimeter set to DC volts; it should read approximately 12 V under load.

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