• Output current: 22 amps 
• Output voltage: 4.0-16V variable
• Noise Offset
• Over current protected
• Red Trip warning LED, Green Power LED
• Dual V/A meters
• Volts adjust with 13.8V position
• Rear power terminal posts
• Selectable 100 - 260V AC (Set for 230V)
• Auto fan cooled or over-ride switch
• Short circuit & over voltage protection
• Power & Warning LEDs
• Detachable mains lead & separate mains fuse
• Size 150 x 55 x 165mm
• Weight 1.2kg

Amazingly small switch mode power supply but has all the features you would expect of a larger power supply - large analogue Volts and Current meters, voltage adjustment 11 to 15V DC, front panel red warning LED, short circuit & overload protection, cooling fan, and large terminal posts (on rear)

With the Noise Offset knob you can adjust the switching frequency of the power supply from 19KHz to 31KHz. This function is especially designed for radio communication use. If you get noise from your transceiver then simply by turning this knob clockwise or counter-clockwise you can tune the noise out!