· One-chip of micro-processor Isi circuit · Lux: 0-100,000 Lux, 3 ranges. · Power off:Auto shut off saves battery life, or manual off by Measurement and ranges Footcandle(Fc) :0 -10,000 Fc, 3 ranges · Sensor: The photo diode and color correction filter, spectrum designed to meet C. I. E. Warranty: One Years push button · Display: 13 mm(0.5") super large LCD display with contrast adjustment for best viewing angle Dual function meter's display