TFA - Dostmann LM37 Lightmeter Range: lx: 0,00...40.000, fc: 0,000...4000 --- Product features : for checking light levels at workplaces, in public, industrial and private buildings, warehouses, film and photographic studios, automatic/manual selection of range, HOLD function, measuring interval 500 ms, automatic zero adjustment, resolution 0,01 lx / 0,001 fc Range: lx: 0,00...40.000, fc: 0,000...4000 50 x 30 x 190 mm, 147 g, 1x 9V battery included