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Function: Illuminance(lux)、Illuminance ratio(%)、Integrated illuminance(lux·h)、Average illuminance(lux)
Detector: Silicon optical device
V(λ) matching error: f1'≤3.5%（ standard class） or f1'≤5%（class 1）
Illuminance Range:
Lux：0.01lux～300klux;
lux·h：0.01lx·h～999.99Mlx·h
Accuracy: ±4%（according to JJG245-2005） or ±2%（according to JJG245-2005）
Dispaly: 5-digit backlit LCD display
Communication: USB
User Calibration: CCF color correction coefficient function, zero setting, calibration
