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• This appliance is only to be used with a SELV (safe
extra-low voltage) wall adapter that is compatible
with the electrical ratings marked on the appliance
label. Any external power supply used with this prod-
uct must comply with the relevant regulations and
standards applicable in the respective country of use.
• Always unplug the appliance fully before cleaning
or carrying out any other maintenance.
• Never plug or unplug the appliance with wet hands,
as this may led to electrical shock. Never allow to let
water or any other liquid enter the appliance, in or-
der to prevent possible electric shock and/or a short
circuit.
• Never insert any metal or other foreign objects into
the appliance.
• Do not use the appliance if the USB power cable or
the appliance itself is damaged.
• The filter has a built-in high-voltage negative ion
generator. Never attempt to disassemble this device
or modify it in any manner.
• Never operate the appliance when not fully assem-
bled.
• Do not cover the air inlet or outlet.
This appliance is intended only for indoor use.
CAUTION! This symbol highlights dangerous
situations which may lead to minor to moderate
injuries, damage, malfunction and/or destruction
of the appliance.
To prevent harm or damage from happening to us-
ers or others, make sure to comply with the follow-
ing requirements.
• Do not use this appliance in a space treated with
insect repellent, lest it be stored inside the appliance
to be released at a later time. This is a health hazard.
Make sure to ventilate the space before turning on
the appliance.
• This appliance is not a ventilator - do not use in
smoke-filled rooms such as kitchens. This product is
not intended to filter oil or grease from the air.
• Never insert any flammable materials and/or lit ciga-
rettes into the appliance to avoid a fire hazard.
• Do not use the appliance in high-humidity or
high-temperature environments such as bathrooms.
• Keep the appliance away from any flammable ma-
terials such as insecticide or air freshener, in order to
avoid electric shock, short circuit, or fire.
• When using the appliance near fire, make sure to ven-
tilate the space to avoid carbon monoxide poisoning.
