The Spectroline DM-365XA Digital Radiometer Photometer provides readings from 0-19,990 μW/cm2 or 0-199.9 mW/cm2 (0-199,900 μW/cm2), respectively. The DM-365XA Radiometer Photometer features an easy-to-read LED display. The overall accuracy of this Radiometer is better than ±5%. Increased accuracy for more repeatable results!