1. Light resistance: Measured at 10 Lux with standard light A (2854K color temperature) and 2hr illumination at 400-600 lux prior to testing. 2. Dark Resistance: Measured 10 senconds after closed 10 lux. 3. Gamma Characteristic: Between 10 lux ande 100 lux and given by γ = lg(R10/R100) R10、R100 Cell resistance at 10 lux and 100 lux. The error of γ is ± 0.1. 4. Pmax: Max. power dissipation at ambient temperature of 25℃. 5. Vmax: Max. voltage in darkness that may be applied to the cell continuously.