Product Details  The products are widely used in aviation,vehicle,chemisty,electric power,atomic energy,building construction  Total length 1m/3m/5m/10m/15m/20m outer diameter of the main insertion tube 10mm/13mm/16mm depth of view 10mm--------120mm direction of observation directly bending angle of probe up,down,left ,right ≥90° field of angle 90° light source LED(adjustable) color color monitor  8 inch LCD power 220V 50Hz signal style PAL resolution 480line image sensor 1/4 inch CCD image sensor lowest illumination 3Lu×F1.2 5600°K  W/B atuo high speed W/B work temperature 20°CTO50°C work humidity 85%RHBelow 8585%RH Portable Power with AC&DC for Two USE