What document is issued by the state fire marshal indicating registration?

The document issued by the state fire marshal that indicates registration is the certificate of registration. This certificate serves as an official acknowledgment that a particular fire extinguisher or firefighting equipment has been registered and meets regulatory standards set forth by the state. It is essential for ensuring that the equipment is compliant with safety regulations and is recognized by authorities for use in public and private establishments.

Having a certificate of registration also helps in maintaining accountability and ensuring that fire safety equipment is adequately inspected and maintained. Besides, it plays a vital role in the enforcement of fire safety laws, helping to ensure that businesses and organizations comply with legal requirements for fire protection measures.

In contrast, other options like a license of operation typically pertain to the legal permission to perform specific activities or run certain businesses, rather than signifying registration of equipment. A commissioner's approval reflects endorsement or clearance usually from a regulatory body but does not specifically denote equipment registration. Finally, a DOT specification relates to the standards set by the Department of Transportation, primarily focused on vehicles and transportation, rather than fire safety equipment registration at the state level.