Which component is associated with moisture monitoring inside the launch system?

• A. IR Window
• B. Humidity indicator
• C. IFF switch
• D. Acquisition indicators

Answer: (B)

Moisture inside a launch system can cause corrosion, condensation on sensitive electronics, and degradation of seals or propellant performance, so monitoring that moisture level is essential for reliability. A humidity indicator is specifically designed to show the current moisture condition inside the system, giving a quick, visual cue to technicians that the environment is within acceptable limits before use.

The other components serve different roles: an IR window is a transparent path for infrared signals to pass into or out of a sensor or seeker, an IFF switch relates to friend-or-foe identification, and acquisition indicators show whether the system has acquired a target or is prepared for tracking. None of these are dedicated moisture-monitoring devices, making the humidity indicator the best answer for moisture monitoring inside the launch system.