Light meter has a wide-band UV wavelength of 320 to 390 nm. Traceable® Ultraviolet Light Meter measures on three different ranges from 0 to 199.9 uW/cm2 (resolution 0.1 uW/ cm2), 1.999 mW/cm2 (resolution 0.001 mW/cm2), and 19.99 mW/cm2 (resolution 0.01 mW/cm2). Accuracy is K (2% of full scale plus 2 digits). Traceable® light meter has Serial RS-232 output that allows it to be connected to a computer or data logger for monitoring and keeping results. Individually serial-numbered Traceable® Certificate is provided to indicate instrument traceability to NIST. Unit recalls highest, lowest and average readings at the touch of a button. DATA HOLD button "freezes" the display to capture readings. Precise photodiode and color-correction filter provide cosine- and color-corrected measurements. Unit is supplied with 3/4 inch-diameter photocell (cable length is 40 inches), Traceable® Certificate, 9-volt alkaline battery and serial computer output. Size is 7 x 3 x 1-1/4 inches. Weight is 9.5 ounces.