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Safety Precautions
Important! Read all instructions carefully before use and keep it for
future reference.
The HumminGuru S-DUO executes two main functions: ultrasonic cleaning and vertical
down force measurement. The device is limited to serve for turntable stylus only and
applicable to moving magnet and the moving coil cartridge. This page is mainly referred
to safety precautions to prevent property damage and danger to the users and others.
After understanding the indication and the symbols clearly, please read thoroughly and
follow the instructions strictly.
• DO read the instructions on your device before installing batteries.
Only use the size and type of battery specified in the instructions.
• DO keep the batteries in a safe place away from children and pets.
• DO insert the batteries properly. Follow the symbols showing the
correct way to position the positive (+) and negative (-) ends of the
batteries.
• DO remove all batteries from the device at the same time and replace
them with new batteries of the same size and type.
• DO remove the batteries when it is not expected to be used for
extended periods of time (>6 months).
Symbol Explanation
Indicating “when the
product is used wrongly,
it may cause severe
injuries
*1
and death.”
Indicates prohibition (must
not do). The details of the
prohibition will be instructed
by sentences or illustration
nearby or in the symbol.
Indicating “when the product
is used wrongly, the user
may get injured
*2
or the
product may cause property
damage
*3
.
Indicates mandatory (must do).
The details of the mandatory
will be instructed by sentences
or illustration nearby or in the
symbol.
*1: Severe injuries mean to get an electric shock, short circuit, and ignition.
*2: Getting injured mean you get wound and electric shock.
*3: Property damages means the damage to the accommodations, properties, the device, and
turntable cartridge, etc.
Prohibited
Disassemble
is prohibited
Soaking is
prohibited
Wet hand is
prohibited
Mandatory
WARNING : AAA BATTERY
