Pipe Inspection System: With laser ranging,wireless transmission and other specilized optional functions. 540TVL, 8 LED Pipe Inspection System SD-1000II:Mainly used for industrial containers and pipe inspection,with zoom video,optional laser raging,wireless transmission and other specialized functions.Detailed specifications:CCD Type1/4 CCD1/4 Ex-view HAD CCDHorizontal Resolution:540TVLFocus: ...