在线浏览, 第4页, 奥图码 Optoma EW539 使用说明书

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4 English Usage Notice Do: Turn off and unplug the power plug from the AC outlet before cleaning the product. Use a soft dry cloth with mild detergent to clean the display housing. Disconnect the power plug from AC outlet if the product is not being used for a long period of time. Do not: Block the slots and openings on the unit provided for ventilation. Use abrasive cleaners, waxes or solvents to clean the unit. Use under the following conditions: - In extremely hot, cold or humid environments. Ensure that the ambient room temperature is within 5 - 35°C. Relative Humidity is 5 - 35°C, 80% (Max.), non-condensing. - In areas susceptible to excessive dust and dirt. - Near any appliance generating a strong magnetic field. - In direct sunlight.

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