Introduction: Ak-nv2000 is aithink recommend hd thermal camera models for super-long-distance forest-fire prevention and railway monitoring. With 30x optical zoom f=4.3-129mm, optional thermal camera f=35m, f1.0, ak-nv2000 can precisely identify people and car at 1000m.With top ip66 grade and hanger for easy installation, ak-nv2000 combined with multiple aithink patented and technology advantages, this model is your first choice for night monitoring. Main use: Army border, police anti-smuggling, marine fisheries, forest fire prevention, safe city, oil fields, factories, airports, railway station, docks, etc.