... PSE 5, OEM/ODM. Small Humidity Control Box For Camera Basic Information Product NameProduct ModelOutside ... open it, the key can be used as a handle. 2, The built-in humidity control ... , monitoring the in humidity. Clockwise, humidity is lower, the higher to the contrary. 3, With environmental protection ... metals,parked the baton,semiconductors,printed circuit boards,tungsten wire,IC cards, ...