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We have this power supply in stock!

CCC APPROVED 12V 2A 24V1A  Wall-mount Switching Power Supply

Model:SG-1202000 SG-2401000

Specification:
Input Voltage 100-240V
Output Voltage 12V DC 24VDC
DC Connector Size: 5.5x2.1mm
Cable Length: 1.5M
Color: Black or White

Voltage:
This power supply we sell is 12V/ 24V DC. It take any input from 100V up to 240V AC, which is what comes out of your wall socket, and output 12V/ 24VDC. 
This is what most digital devices such as LCD screens, DVD players, Hard Drives, Audio Gear, CCTV camera and most other digital devices use. 

Amperage:
Once you have confirmed that you need a 12V/ 24Volt power supply, you will need to find out how much power your device draws. This is called amperage. 
Next to the 12V/24V in the specifications there will be another number followed by a capital "A" for Amps. You will need a power supply that can supply enough power for your device. 
Connector:
This power adapter adopts standard plug size 5.5x2.1MM. Most 12V/24V DC devices use the standard tip.

We can also offer another size plug,like 5.5x2.5MM,3.5*1.35mm,etc.