A high-performance IR camera, the SIR-4150 provides high-resolution video images regardless of day or night, and it can detect and distinguish a moving subject in a pitchdark environment with 0 Lux minimum illumination. Equipped with various features for advanced functions such as high-resolution video images, ICR Day & Night feature, Vari-Focal Lens and outdoor camera housing ensures you have the most reliable 24-hours a day video surveillance that provide clean and vivid image for all major areas including : military bases, ammunition dumps, outskirts of factories and small-sized stores.