The Extech SDL470 is a UVA/UVC light meter and data logger. The SDL470 can measure both long-wave and short-wave UV irradiance under UVA and UVC light sources. This meter features a cosine correction filter, data logging in Excel format, offset adjustment for relative measurements, type K/J thermocouple input for temperature measurements (probe sold separately), record/recall modes, min and max readings and measurement memory, and auto power off with disable function. This product comes complete with integrated stand, SD memory card, UVA light sensor with protective cover, UVC light sensor, hard case, universal power supply and 6 AA batteries.