Easy to install, the IRW-xx includes a locking ring with teeth for a secure fit. Designed for IR and visual inspections, FLIR’s IRW-xx IR Inspection Window significantly minimizes the risk of arc flash incidents by putting a window of safety between you and energized equipment. The broadband crystal lens allows you to safely perform scans and inspections while remaining in full compliance of NFPA 70E requirements. It features a flip-open cover that can be opened with one hand, and a PIRma-Lock ring nut that automatically grounds all metal components. Engineered to meet all relevant UL, CSA, IED and IEEE standard and ratings, this high-quality inspection tool is designed to perform consistently safe and efficient electrical inspections.