Description of Power Adapter 12V "Adapter 12V" is a switch mode power supply (SMPS), which can convert AC 100~240V to DC 12V. This low price light weight power adapter may be suitable for your most electronics projects.    As far we know, quality of the low price chinese products may falls within times. Thus why to ensure the product quality, this product is tested by our technical team and the following technical parameter is published.      TSB QC Reports:  ---------------------------------------- Output Voltage: 11.50V ~ 12.20V  Ouptut Current: 250mA ~ 700mA  Size: 3 inch x 2 inch x 2.7 inch  Cable Length: 2 feet 10 inch  Weight: 60g