à¤Ã×èͧÇÑ´áʧ Pocket Size LUX/FC Light Meter ªèǧ¡ÒÃÇÑ´ 400,4,000,40,000,400,000 Lux ÃØè¹ TM-720 Brand Tenmars à¤Ã×èͧÇÑ´áʧ TM-720 Pocket Size LUX/FC Light Meter Descriptions: According to JISC1609 : 1993 and CNS 5119 general A class specifications. Spectral response close to CIE luminous spectral efficiency. Measuring the intensities of illumination displays in unit of Lux or Foot-candle. Silicon photo diode and filter. Measuring light source include all visible light source. Cosine angular corrected. Auto power off and disable function. Data hold, Max/Min/AVG hold. Real Zero function. Auto ranging. Application: Warehouses, factories, office buildings, restaurants, schools, library, hospitals, photographic, video, parking garages, museums, art galleries, stadiums, building security. Specification TM-720 Light Meter Light Source Selecting Tungsten/Daylight, Fluorescent, 0~9 select rating Measuring range 400,4,000,40,000,400,000 Lux 40,400,4,000,40,000 Foot-candel Accuracy ±3%±3Lux(0~500Lux), ±3%(up 501 Lux) (Calibrated to standard incandescent lamp 2856∘K) ±8% (other visible light source) Dimension 133mm x48mm x23mm (LxWxH) Power 2 batteries 1.5V AAA Weight (including battery) 80g Light meter Lux meter TENMARS TM-720 à¤Ã×èͧÇÑ´áʧ