The AXIS P3915-R is a high-performance camera specially designed for mobile video surveillance in buses, trains, subway cars and emergency vehicles. The camera has protection against dust and water, and can withstand tough conditions such as vibrations, shocks, bumps and temperature fluctuations. The active tampering alarm can detect tampering attempts such as blocking or spray-painting. AXIS P3915-R has support for HDTV 720p. The camera is specially adapted to respond quickly to changes in light levels, ensuring that high image quality is maintained. Traffic Light mode helps to better distinguish colors of traffic lights in very dark scenes. The use of progressive scan also produces clearer images of moving objects. The pixel counter helps verify that the pixel resolution of an object or face meets regulatory or specific customer requirements. The camera is designed for quick and reliable installation. The desired field of view and a leveled image can be easily achieved by using the supplied lens tool to direct and rotate the ball that holds the lens and image sensor. Since the AXIS P39-R Series shares the same physical interface as the preceding model, the AXIS M31-R Series, upgrades of existing installations are quick and easy.