... CE/ROHS / PSE 5, OEM/ODM. Small Humidity Control Box For Camera Basic Information Product NameProduct ModelOutside Size(mm)Inside ... no noise. 4, Widely suitable for saving videotape equipment, personal precious collection, optical diaphragm, chemical powder and other easily ... ,IC cards,batteries etc35%-25%Precision measuring tools,optical instruments,a light source,detector,lenses,lens,pharmaceutical ...