High voltage power supply, manufactured by Plastic Capacitors Inc, part number HV150-502M. Previously used. Input rating: 118VAC 50-500Hz. Output rating: 15kVDC 5mA. Approximate dimensions: 4" x 5" x 7". Please read the instruction / specification sheet (PDF ~ 1MB) available
here. Additional information is available on the manufacturer's web page at www.plasticcapacitors.com/power.html