What signal should be transmitted when investigating numerous malicious false alarms in a building?

Transmitting a signal of 10-92 is appropriate when dealing with malicious false alarms in a building. This code indicates that multiple false alarms have been received, warranting a more comprehensive investigation by the fire department. It alerts the responding units to the potential for a recurring issue, allowing them to approach the situation with heightened awareness and take necessary precautions. Recognizing a pattern of false alarms can help in identifying whether they are indeed malicious or due to other factors, and it informs the fire department's response strategy.

The other codes do not specifically address the situation of investigating multiple false alarms. Using the wrong signal may lead to inadequate responses or miscommunications among fire personnel, which is crucial during an investigation where efficiency and safety are paramount. Hence, using the proper signal ensures that everyone involved is adequately informed about the nature of the alarms being investigated.