What two maintenance practices are essential to keep surveillance equipment reliable?

• A. Replace batteries occasionally and ignore calibration.
• B. Calibrate only after failure and store anywhere.
• C. Use device until it fails; then repair.
• D. Regular calibration/testing and proper storage/battery management.

Answer: (D)

Maintaining reliability comes from preventive upkeep: keep the equipment accurate and ready through regular calibration and testing, and protect it with proper storage and battery management. Regular calibration catches sensor drift and ensures readings and detections stay correct over time, rather than letting drift go unnoticed until a failure occurs. Proper storage and careful battery management protect the hardware from environmental damage and power issues, so devices perform when needed and have a longer, more dependable life. If you skip calibration or store the gear in poor conditions, accuracy and readiness suffer; waiting for a failure to act and leaving batteries unmanaged leads to downtime and unreliable surveillance.