à¤Ã×èͧÁ×ÍÇÔ·ÂÒÈÒʵÃì ÍØ»¡Ã³ìÇÔ·ÂÒÈÒʵÃì Light meter Lux Meters à¤Ã×èͧÇÑ´áʧ > Heavy Duty Light Meter à¤Ã×èͧÇÑ´áʧ HD400 "Meets ANSI and IEC61672-1 Type 2 standards" Heavy Duty Light Meter Large backlit LCD display with 40-segment bar graph Wide range to 4,000Fc or 40,000 Lux Cosine and color corrected measurements Utilizes precision silicon photo diode and spectral response filter Peak mode (10μS) captures highest reading Relative mode indicates change in light levels Min/Max and Data Hold Backlight for readings in low light levels Heavy Duty rugged double molded housing Built-in USB port Specifications Fc Range 40, 400, 4000Fc Lux Range 400, 4000, 40kLux Accuracy ±5% rdg Max Resolution 0.01Fc/0.1Lux Datalogging 16,000 continuous readings; 99 selected readings PC interface USB Dimensions 6.7 x 3.1 x 1.6” (170 x 80 x 40mm) Weight 13.7oz (390g)