·High precision and wide measuring range (0.00~200000Lux) ·Measurement spectral range: 320~730nm ·Measuring range: 20/200/2000/20000/200000 Lux 20/200/2000/20000 FC ·Working temperature: -10~50℃, maximum relative humidity of 80% (non-condensing) ·Storage temperature: -10~50 ℃, maximum relative humidity of 80% (non-condensing) ( the battery) ·Accuracy: ±3% (calibrated according to ordinary incandescent lamp at 2854K) ±6% other visible light sources ·Cosine angle deviation characteristics Cosine angle error 30° ±2% 60° ±6% Note: The cosine angle is corrected in accordance with JIS C 1609:1993 and CNS5119 Class A general specifications ·Sampling rate: ≥2 times/sec ·Sensor: Silicon photodiode ·Use environment: indoor use ·Altitude: up to 2000m ·Battery life: about 200 hours ·Power supply: 1×9 V, IEC 6LR61 ·Size: 190 mm×89 mm×42.5 mm ·Weight: about 360 g (without batteries)