1.Articulation electrically controlled; 2.lens dia.:5.8mm; 3.Zoom in and out:8 times; 4.Night vision; 5.Patent design. Usage Area•Maintenance:Automotive,Machine tool,Aerospace•Engineering:Piping,Building,Archaeology,Mining•Home:Airconditioner,Refrigerator,Testing floor angle in dark,Cabinet,Searching•other(widely used!)Specification ItemValueLens dia.5.5mmLens functionwith four directions turn ...