Final answer:
Electronic checkout is not a required safety component of the anesthesia machine; it is a procedure rather than a built-in safety device.
Step-by-step explanation:
The question revolves around the identification of components that are not considered a required safety feature in the operation of an anesthesia machine. While agent-specific vaporizers, oxygen analyzers, and oxygen failure safety valves are integral for the reliability and safe delivery of anesthetic and oxygen gases, Electronic checkout is not a required safety component. Electronic checkout is a procedure used to confirm the proper function of an anesthesia machine before use but is not a built-in safety device like the others.