It shall be unlawful for any person to deliberately, recklessly or maliciously give, signal or transmit, or to cause or permit to be given, signalled or transmitted, an emergency alarm when in fact that person knows that no such emergency exists. A faulty or nuisance alarm is deemed to occur whenever the fire official or fire department officer-in-charge responding to an alarm call, determines after investigation that faulty equipment initiated the alarm. Whenever faulty or nuisance alarm activations occurring in any occupancy exceed three (3) in a 90-day period, the fire official may require the owner or occupant to conduct a witnessed test of the fire protection system causing the faulty or nuisance alarm. Inspection fees shall be as in Subtitle 11, Sec. 11-163 of Prince George's County Code - $150 per hour, or part thereof, per inspector.