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Feature

High quality wall wart AC to DC power supply, with input voltage of 120-240V AC and output of 9V 650mA.
Fit most projects less than 650mA.
With a center-positive 5.5 x 2.1mm barrel connector, fits positive-tip and negative-barrel ports.
Suitable for supplying the Arduino boards (UNO, MEGA 2560, Duemilanove), or some other devices.
Cable length: 200cm (6 feet).

Description

Introduction
This 9V/650mA power adapter works with most devices that use a 9V and less than 650mA of power.

Note:
1.Since it provides a max current of 650mA, it cannot drive devices with higher rated current.
2.It's a center-positive barrel connector, of which you should be well informed before purchase.
3.It fits pedals with power ports of positive-tip and negative-barrel, suggesting not recommended for ports of a negative tip and positive barrel.