Our Intrinsically Safe SMART Infrared Inspection Window is manufactured from industrial grade materials designed to withstand electrical arcs and certified by Underwritten Laboratories. One of the many features of these intrinsically safe infrared inspection window is the 1/4 turn locking system and spring loaded cover it reduces your time per inspection. It also features a HYDROGARD for the crystal lens protection, aluminum housing, communicate wirelessly with RFID enabled device, and impact resistant. It features Sira IP65.