à¤Ã×èͧÁ×ÍÇÔ·ÂÒÈÒʵÃì ÍØ»¡Ã³ìÇÔ·ÂÒÈÒʵÃì Light meter Lux Meters à¤Ã×èͧÇÑ´áʧ > Light Lux Meter with memory à¤Ã×èͧÇÑ´áʧ Light Lux Meter with memory à¤Ã×èͧÇÑ´áʧ EA33+ Cosine and color corrected, CNS 5119 Class II Easyview™ Light Meter with Memory Large LCD display with advanced illuminance functions and features Wide measurement range to 99,990Fc (999,900 Lux) with resolution of 0.001Fc and 0.01Lux Luminous intensity (candela) calculations Store and recall up to 50 measurements, includes relative or real time clock stamp Ripple function excludes the effect of stray light from the primary light source measurement Timed-Hold, Relative in absolute value or % deviation, and Comparator function with high low alarms Display Counts: 999,999 count LCD Fc Range: 9.999Fc, 99.99Fc, 999.9Fc, 9,999Fc, 99,990Fc Lux Range: 99.99Lux, 999.9Lux, 9999Lux, 99,990Lux, 999,900Lux Max. Resolution: 0.001Fc/0.01Lux Basic Accuracy: ±3% Cosine & Color Corrected: Yes Dimensions: 5.9 x 2.8 x 1.4" (150 x 72 x 33mm) Weight: 11.29oz (320g) EA33 Extech Light meter Lux meter à¤Ã×èͧÇÑ´¤ÇÒÁà¢éÁáʧ à¤Ã×èͧÇÑ´áʧ