- Measurement function: Illuminance, Chromaticity coordinate (x,y) (CIE1931), (u',v') (CIE1976), Correlated color temperature, color difference (CIE1960)
- Accuracy: Ev/ ±3% + 2 digit (when standard illuminant is A3000Lx), x,y/ ±0.02 (when RGB LED is 100Lx)
- Resolution: Ev/1Lx (0 - 9999Lx), 10Lx (10000Lx or more), CCT/1K (0 - 9999K), 10K (10000K or more), x,y/0.001, u’,v’/0.001
- Reproducibility: x,y/ ±0.003 (when RGB LED is 100Lx)
- Response time: Approximately 1 second
- Temperature characteristics: Ev/ ±(5% + 2digit) (when standard illuminant is A3000Lx), x,y/ ±0.008 (when RGB LED is 100Lx)
- Humidity characteristics: Ev/ ±(3% + 2 digit) (when standard illuminant is A3000Lx), x,y/ ±0.005 (when RGB LED is 100Lx)
- Size: Body/140 x 49 x 29mm, Sensor/165 x 50 x 36mm
- Power supply: 006 (9V) dry cell
- Weight: Approximately 180g (not including cell)
- Measurement range (Ev): 0 - 80000Lx
- Measurement range (CCT): 99990K (MAX)
- Model number: ST520
Package size:270×275×80 mm 1.05 kg