This VIVOTEK thermal bullet camera is a security camera that images heat rather than visible light, giving it a genuine advantage over ordinary CCTV in total darkness, smoke, fog or glare where a normal camera would see nothing useful. It has a 640x512 thermal sensor resolution and built-in human/vehicle classification so it can distinguish a person or vehicle from background clutter (reducing false alarms), plus temperature-measurement capability for monitoring equipment or perimeter heat anomalies. Cameras like this are deployed for perimeter security, industrial monitoring and critical-infrastructure protection — sites needing reliable detection in poor visibility or 24-hour darkness — rather than general-purpose indoor CCTV.