38006 is a Level IV Special work element.
Understand the theory of operation of heat detectors of the fixed temperature, rate compensation, and rate-of-rise principle of operation. Know the proper and improper applications of heat detectors, the way each type of heat detector responds to a fire, and the methods used by testing labs to determine the suitability of a heat detector for listing. (NFPA 72, UL-521, 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.