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window. If used and stored properly, the infrared lens on the product should
require only occasional cleaning (Figure 3.1).
When necessary, to clean the lens:
1. Use a hand-squeeze air pump to gently blow off any dust or debris from
the lens surface.
2. If the lens surface requires additional cleaning, use a clean, fine-fiber
cloth, micro-fiber cloth, or cotton swab dampened with a mild, soapy
water solution. Gently wipe surface of lens to remove smudges and
debris.
3. Dry with an absorbent, clean fine-fiber or micro-fiber cloth.
Note: Minor smudges and dirt should not significantly affect the performance
of the product. However, large scratches or the removal of the protective
coating on the infrared lens can affect both image quality and the
temperature measurement accuracy.
To avoid incorrect measurements, replace the batteries when the battery
indicator is low. Use only AA alkaline batteries and follow all battery care
guidelines from the manufacturer. To remove the batteries, first ensure the
product is in OFF position, then unscrew the battery cover. When installing
the batteries, be sure that the battery polarity is correct to prevent battery
leakage. Secure the batteries by screwing the battery cover back in place
(Figure 3.2).
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