Model:  ST-7021
Feature: 1/3-inch Sony CCD
450TVL (480/540TVL optional)
IR Range: 40m
3.6/6/8mm lens optional
Cable out of bracket design
Double glasses to reduce IR disturb
IR auto-open by CDS control in low lux

Technical parameter:
Pick-up device:  1/3-inch Sony  CCD
Number of pixels: PAL:500(H) x 582(V)    NTSC: 510(H) x 492(V)
Resolution:  450 TV lines (480/520TVL optional)
Minimum illumination:  0Lux/F1.2
Lens:  3.6/6/8mm lens optional
Power consumption:  180mA
Back-light compensation:  auto
White balance:  auto
S/N ratio:  More than 50dB (AGC off)
Gamma modification:  0.45
Gain control:  Auto
Electronic shutter:  1/60(N)/1/50(P)~1/120, 000sec
Operation temperature:  -10 deg to 50 deg
Sync system:  Internal/line-lock
Supply voltage:  DC 12V