Precautions For Use: To Extend Monkey Fan Life, It Must Work Horizontal. There is only one motor for the "fan" and "vibration" functions. So when the MF operates vertically instead of horizontally, the engine is subjected to an effort that shortens the life of the product. If you follow these instructions, producers are guaranteed to use the MF for 5000 MTBF (one year of intensive operation).
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