(Summary description)First, as an outdoor headlamp, it must have the following three important performance indicators
Water resistance
In outdoor camping, hiking or other night operations, it is inevitable to encounter rainy days. Therefore, the headlights must be waterproof, otherwise the short circuit of the circuit will be caused in case of rain or water immersion, resulting in extinction or flickering, causing potential safety hazards in the dark. Then, when purchasing headlights, you must see whether there is a waterproof mark, and it must be greater than the waterproof grade above IPX3. The larger the number, the better the waterproof performance (the waterproof grade is not described here).
Fall resistance
A headlamp with good performance must have fall resistance (impact resistance). The general test method is to fall freely at a height of 2m without any damage. In outdoor sports, it may slip due to loose wearing and other reasons. If the falling causes shell cracking, battery falling off or internal circuit failure, Even looking for a fallen battery in the dark is a very terrible thing, so such a headlamp must be unsafe. Therefore, when purchasing, you should also see whether there is a fall resistant logo, or ask the shopkeeper about the fall resistance of the headlamp.
Cold resistance
It is mainly aimed at outdoor activities in northern areas and high altitude areas, especially the headlamp of split battery box. If the headlamp of inferior PVC wire is used, the wire skin may be hard and brittle due to cold, resulting in the breaking of internal wire core, I remember that the last time I watched the CCTV flame climb Mount Everest, there was a fault that the camera wires cracked and had poor contact due to extremely low temperature. Therefore, if you want to use outdoor headlights at low temperature, you must pay more attention to the cold resistant design of the products.

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• Time of issue:2021-09-23 10:06
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