The Edison Testing Laboratories (ETL) Listed Mark, provided by Intertek, is proof of product compliance in electrical, gas and other safety standards to North American safety standards. Intertek is recognized by the Occupational Safety and Health Administration (OSHA) as a Nationally Recognized Testing Laboratory (NRTL). The ETL Listed Mark is recognized in 50 states and Canada and accepted by all major North American retailers.

This certification mark indicates that the product has been tested, the manufacturing site has been audited, and the applicant company has agreed to a program of periodic factory follow-up inspections to verify its continued performance.