NFPA upper level zone C:
Product: LEDB210-1[*] & LEDB210-2[*]
Two (2) PowerArc LED warning lights, model's LEDB210-1[*] & LEDB210-2[*], shall be mounted on the upper rear corners of the apparatus, one (1) on each side. These lights shall be positioned to fulfill the requirements for Upper Zone C and in combination with the lightbar fulfill the requirements for Upper Zones B and D.