Lei Electronics Inc. MT12-Y090100-A1 12V 1A 5.5x2.1mm power adapter
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.
How it compares
Measured against everything we stock in AC Adapters & Power Bricks, at today’s prices. Recalculated every night.
- Price $14.99
- Cheaper than about 85% of the 3,875 comparable items (median $23.99).
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Specifications
| Product | |
|---|---|
| Model name | MT12-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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