1. Before installing the anti-fog lens, always check that the anti-fog film is intact. Do not install if damaged.
2. If you have a multimeter, set it to the resistance setting to test the inner wire of the power cord. A fluctuating pointer or a positive digital display indicates a good result.
3. When installing the lens, leave a gap of at least 1mm around the edges and place a soft pad approximately 2mm thick under the lens. The anti-fog lens will expand slightly when heated; without this gap, it is prone to breakage.
4. Do not cut concave corners or square holes in the anti-fog lens, as the lens will expand and easily break when heated.
5. Do not pull the power cord of the anti-fog lens forcefully to avoid damaging the electronic circuit board.
6. Do not cut or drill holes in the anti-fog film yourself, and prevent mechanical damage.
7. Metal-framed anti-fog lenses must be grounded to prevent static electricity buildup.
8. Do not use cement board as the base for the anti-fog lens; the lens will blacken.
9. For more information, please call Nuoliang Company: 021-64898098