Fast, stable and accurate response. Monitor visible light levels anywhere with fast, stable and accurate response. Results are easily read on the extra large LCD (1½" high, 38.1 mm) with bar graph, low battery and over range indications. The color and cosine corrected sensor meets C.I.E. photopic spectrum. Will read LED light. Also features RS232 computer output, min/max, auto power off, external zero adjustment, hold function and a tripod back. The lux / foot-candle light meter comes ready to use with a 9V battery, instructions, soft padded case with shoulder strap, and a detachable sensor (with 44" cord) with cover for easier replacement or repair. N.I.S.T. traceable certificate of calibration available. Meter Dimensions: 7¾" × 2¾" × 1¼" (197 × 70 × 32 mm) Weight: 10 oz (283 g) .