CERTIFICATE This is to certify that Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833 United States of America has implemented and maintains a Quality Management System. Scope: The design and manufacture of DC/DC converters and AC/DC power supplies encapsulated and open frame. The procurement, testing, storage, and sale of DC/DC converters and AC/DC power supplies encapsulated and open frame marked "Made in Taiwan," and "Made in China." Through an audit, documented in a report, it was verified that the management system fulfills the requirements of the following standard: ISO 9001 : 2008 Certificate registration no. 10002324 QM08 Date of original certification 1997-08-01 Date of certification 2015-08-01 Valid until 2018-07-31 UL DQS Inc. Ganesh Rao Managing Director Accredited Body: UL DQS Inc., 1130 W est Lake Cook Road, Suite 340, Buffalo Grove, IL 60089 USA