Laser Distance Meter เครื่องวัดระยะ Light Meter เครื่องวัดแสง Lighting Retrofit Kit LRK10 เครื่องวัดแสง + เครื่องวัดระยะ LRK10 Lighting Retrofit Kit Essential Tools for Energy Saving Consultants Features : Designed for professionals who routinely audit existing and replacement lighting systems for energy efficiency and lighting performance Kit includes: LT300 - Light meter with digital and analog display of light in Foot-candles or Lux DT200 - Compact laser distance meter with area/volume calculation functions Supplied in a soft carrying case that provides protection and organization for the meters whenever they are needed Extech LT300 Light Detector features Wide range of measurements up to 200kLux or 20,000 Foot Candles High resolution of 0.01 Lux/Fc 5% accuracy Relative mode indicates change in light levels Peak mode captures highest reading Uses precision photo diode and colour correction filter Min/Max and Data Hold Backlit LCD display with bargraph Extech DT200 Laser Distance Meter Measurement range: 2" to 115' (0.05 to 35m) Accuracy (up to 32'/10m): ±0.08” (±2mm) Resolution: 0.001" (0.001m) Length add calculation: 99'11" (99.99m) Area calculation: 999.99 sq. ft. (999.99m2) Volume calculation: 999.99 cu. ft. (999.99m3) Laser power off: after 30 seconds Auto power off: after 3 minutes Power supply: 2 AAA batteries Dimensions: 4.5 x 1.9 x 1.1" (115 x 48 x 28mm) Weight: 5.3oz (150g) Distance Meter DT200 Extech Light meter LRK10 LT300 เครื่องวัดระยะ เครื่องวัดแสง แบบเลเซอร์