Put switch on AC position for the fan works as a normal fan; Put switch on DC position to be an emergency fan(fan can still running when your house was no power)
Dubation
Duration about 4 hours high speed when AC power failure, and about 8 hours low speed
Protection
Support over charge and over discharge protect
Charge Indicator
Yes
Remarks
Upgrade this item to be 16 inch fan, add $2.6 from above prices.
Voltage
AC 110V60Hz/220V50Hz & 2 flat/round plug (any requirement available)
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