Open Box Diamond GZV4000-220 Switching P/S S/N55795. Box has tape residue from shipments.

220 volts Power Supply....NOT 110 volts

GZV4000 Switching Mode DC Power Supply

• Size: 8.25" x 4.5" x 13"
• Weight: 8 lbs.
• 40 Amp Continuous Rating, 100% Duty Cycle
• Variable Voltage Control 5-15 VDC
• Voltage Control Knob has center detent at 13.5 VDC
• Overload & short-circuit protection with Current Foldback at approximately 42 Amp
• Over Temperature Protection; variable speed fan automatically controlled for quiet operation
• Meter Selector allows monitoring of voltage & current
• Access to front panel DC terminals and cigarette lighter jack; standard 40A terminals on rear panel
• Built-in 8W speaker
• Circuitry yields high RFI protection from external sources
• AC line filter for EMI protection
• Standard 3-wire heavy duty line cord
• Power Indicator & Overload Indicator
• Accepts 120 VAC ± 20% 50-60 cps (Not compatible with 220V) 
• Ripple & Noise less than 8 mV r.m.s.
• 1 Year Limited Warranty