The ALX-1309 is an easy to use light meter with USB interface, wide measuring range up to 400,000 Lux, large LCD display, 40 segment analogue bargraph, relative mode and user-selectable measuring units. Ideal for environmental monitoring, health & safety checks, and industrial applications. Measures both lux and footcandles (FC), user selectable Range selection of 4 lux ranges and 4 FC ranges Impact-resistant ABS case with protective rubber boot Silicon photo diode sensor and spectral response filter Fully cosine corrected Sensor connected to the instrument by a fixed 1.5 metre (approx.) coiled cable Measuring rate of 1.5 times per second 43mm LCD display with backlight, 40 segment bargraph and function indicators Data hold freezes measured values Min/max memory Peak min hold and peak max hold Relative readings from user set value Over range indication Reset function Auto power off after 20 minutes of no activity USB interface for real time data output to PC or laptop Supplied with ca