This is a DC "Wall Wart" style power supply. This is an unregulated power supply and is great for replacing lost or broken power supplies on a wide variety of electronic devices.
Output Voltage: 9VDC
Output Current: 500mA
Input Voltage: 120VAC
Unregulated DC Output
2.1mm DC Barrel Plug (Interchangeable tip)
The power supply plugs directly into the a wall outlet or power strip and has a 6' long DC power cord. The 2.1mm DC Barrel Style power plug on the end of the cord is interchangeable with any replacement DC plug that has 2 pins - no soldering required. The polarity of the plug can be changed by rotating and re-inserting onto the end of the power cord.