... LCD display, RS232 computer interface and software, Data hold function. 1. Illuminance measurement: (test condition: vertical) • Relative spectral sensitivity error of ... digital sensor: f1<±5.5% • Dynamic range: 0.1-50,000 lx, Accuracy: <±4% • Sensitivity: 0.001 lx, ... : ±20K (CIE Standard Source A, 500 lx)• Temperature effect: -0.1%/°C• Refreshing frequency: 1n/s(>=10 lx ), 1n/3s(<10 lx ...