Typically, three-car rear-view camera is visible within 10-20 meters.
Waterproof    Ip68
Images Sensors&#-1;&#-1;OV 7949/7950 /7960CMOS&#-1;&#-1;
Effective Pixels  628*582/628*512
Resolution(TV Lines)    480
Less light 1.2f/0.5 LUX Illumination(Lua/f1.2) 0.5 
Horizontal Sync.Frequency(KHZ) 15.625/15.734
Vertical Sync.Frequency(HZ) 50/60
Video Output:    75 Ohm 
Gamma Consumption:    0.45
AGC:    Auto
BLC :    Auto
48dB  S/N ratio : Better than 48dB
Lens:    F=1.9mm/F=2.0
170 Lens Angle(Deg.) : 170° 
  -Power Supply(DCV) 12 V 
  -Min working temperature pharmacist -20 ° to 75 °. Maximum relative    humidity 95% Operating
  -Temperature(Deg.C):    -20+75(RH95% Max.)
Storage temperature -30 ° to +85 °. Relative Humidity: 95% Storage T.
  -30~+85(RH95% Max.)