33024 is a Level II General Non-Core Work element.
The asterisk (*) following 33024 means crossover credit exists in selected other fields/subfields for this work element. Read information on crossover work elements in the Program Detail Manual on pages 4 and 5. You won't receive the crossover credit until you test in another qualified sub-field for the first time.
Understand the basic principles of operation of flame flicker, infrared, photoelectric, and ultraviolet flame sensing fire detectors and the particular location and spacing requirements for flame detectors when used on indoor and outdoor applications. (NFPA 72)
NICET TEST PREPARATION HANDBOOKS are now available for this element and for every element in level 1 through level 4.