The number one damage factor to infrared night vision devices is use in bright light. Although the infrared night vision device will automatically cut off the circuit when overloaded to protect the device, exposure to strong light will shorten the life of the infrared night vision device. Exposure to rain, fog and even high humidity can damage infrared night vision devices. For use at night, the infrared night vision device is designed to withstand short periods of bright light or humidity. There are very delicate vacuum tubes in the infrared night vision device, so it is important to pay attention to anti-collision and careful handling. The method of cleaning the infrared night vision lens is the same as the method of cleaning the camera lens. The lens has an optical coating, which can easily be scratched if it comes in contact with rough materials, or dust seeps into the glass. Usually there is no need to remove the lens to clean the interior. If it is not used for a long time, it is best to store the infrared night vision device in a cool and dry place after removing the battery.