... and fast.VA8050/VA8051 featured advantages are double parameter measurement - Lux (lm/m2) & footcandle (lm/ft2), over range indicator, low battery ... , big 6-digit LCD screen, measuring range of 0~90000 Lux & 0~8300.0 ftc, accuracy of ±(3% +30 digits), 1sec ... and Minimum reading functions, and backlight.PECIFICATIONS:Double Parameter Measurement: Lux(lm/m^2); foot candle (lm/ft^2) Range: 0 ...