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Function: Illuminance(lux),Illumnance difference,Illuminance ratio(%) Integrated illuminance(lux·h), Average illuminance(lux)
Detector: Silicon optical device
V(λ) matching error: f1'≤5%(class 1)or f1′≤3.5%(class standard)
Illuminance Range: 0.1lux～20klux (Four ranges of automatic range switching)
Accuracy: ±4%（according to JJG245-2005）
Holding function: Holding the readings, easy to read
Configurations: Host,detector,battery,bag
