注意穿戴防尘土的衣服、面罩、手套和眼镜等。

Note to wear anti-dust clothes, masks, gloves and glasses, etc.

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光学系统：注意使用环境的防尘和通风散热。

Optical system: the use of the environment and dust and ventilation cooling.

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避免将产品暴露在阳光下或者其他热源的地方，注意防湿防尘。

Do not use in humid or dusty, under direct sunlight, or other heat sources.

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