MODEL CHK -538
Day&night CHK -530 CHK -531 CHK -551 CHK -551B
Day&night CHK -551R
Day&night,IR
Pick-up device 1/4 inch?solid state image sensor
Number of pixels PAL:752(H) 582(V) NTSC:768(H) 494(V) PAL:512(H) 582(V) NTSC:512(H) 492(V)
Horizontal resoltion 480TV Line 420TV Line
Minimum illumination 0.01Lux/F1.2 0.1Lux/F1.2 0.01Lux/F1.2
Lens mount 22x Zoom Lens (3.9-85.8mm, F1.6-3.7)
Zoom ratio 220X 22X
control RS-422/485
Backlight compensation ON/OFF
Electronic shutter NTSC:1/60~1/10,000Sec PAL1/50~1/10,000Sec
White balance Auto/Push Auto
AGC Auto
S/N ratio More Than 48dB (AGC Off)
Gamma correction >0.45
Operation temperature -20degree~50degree
Sync system Internal/System
Video output 1.0v p-p /(75Ω, composite)
Power consumption Max, 4.5W/360mA
weight(g) 310g
Dimension(mm) 60(W) 60.4(H) 103(L)mm