What term describes equipment that has been evaluated and marked by an organization with periodic inspections?

The term "Listed" specifically refers to equipment that has been evaluated by a recognized testing laboratory and marked accordingly, indicating that it meets established safety standards. This marking indicates that the equipment has undergone thorough testing and inspection, confirming it complies with the relevant regulations. The process not only includes an initial evaluation but also necessitates ongoing inspections to ensure continued compliance with safety standards throughout its lifecycle.

In comparison to the other terms, "Approved" generally implies endorsement or acceptance but does not inherently include the rigorous evaluation and periodic inspection that are characteristic of being "Listed." "Certified" often suggests that a product meets specific standards or qualifications but may not carry the same connotation of periodic inspection by a recognized authority. "Registered" typically denotes that a product has been officially recorded or documented but does not imply evaluation or compliance testing in the way that being "Listed" does. Thus, "Listed" is the most accurate term that encompasses the thorough evaluation and ongoing inspections of equipment by a reputable organization.