... linear grey correction ,with red,green,blue 8 calibration curves of each color/poleContrast ratio:greater than 150:1Image adjustment:white ... and power fails protection deviceWorking voltage: three phase five wire system ,AC380V±10% ,AC220±10% ,50Hz±5%Video input formats ... .• Brightness:0-1,000 nits adjustable.• With SMPTE TV color correction system,make image more ample.• Security low current in R, ...