Quick 220® Voltage Converters
Diamond H Company LLC, doing business as Quick 220® Electrical Systems, was formed in Arizona in 1994 to develop the concepts embodied in the Quick 220® Voltage Converting Power Supply. The first model was made available to the public and sold in 1998. In 1999, United States Patent 5,977,658 was issued covering the safety circuit employed within the Quick 220® Power Supply.
Our business hours are 8 AM to 4:30 PM, Mountain Standard Time, Monday through Friday. (Arizona does not observe Daylight Time.) Please call if you have any questions.
Diamond H Company, LLC
dba Quick 220® Electrical Systems
2432 W Peoria Avenue
Bldg 6, Suite 1094
Phoenix, Arizona 85029 USA
Telephone: 1-800-347-0394 (US & Canada) or 1-602-938-6057