38007 is a Level IV Special work element.
Understand the theory of operation of smoke detectors of the ionization, projected beam, aspiration, photoelectric, and cloud chamber operating principle of operation. Know the proper and improper applications of smoke detectors, the way each type of smoke detector responds to a fire, and the methods used by testing labs to determine the suitability of a smoke detector for listing. (NFPA 72, UL-268, Fire Protection Handbook)
Fire Protection Handbook
NICET TEST PREPARATION HANDBOOKS are now available for this element and for every element in level 1 through level 4.