• TYPE: WATSON HIGH QUALITY SWITCH MODE POWER SUPPLY
• OUTPUT CURRENT: 22 AMP
• OUTPUT CURRENT MAX: 25 AMP 
• OUTPUT VOLTAGE: 11-15V VARIABLE
• Noise Offset
• Cigar lighter socket (with cover) on front panel
• 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 200 (deep) x 65 (height) x 172 (width) mm
• Weight 1.8kg

A real quality 22A continuous 13.8V switch mode power supply. Has all the features you would expect on a power supply cosing twice as much! Large analogue Volts and Current meters, voltage adjustment with set position for 13.8V, front panel red warning LED, short circuit & overload protection, cooling fan, and four (two red & two black) large terminal posts (on rear). On/Off switch also 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!