3
Symbol
Title and indication
General instruction
Indicates unspecified general action on the part of the user.
Connect a ground wire
Instructs the user to connect the ground wire without fail where the unit is provided with a
ground terminal.
Remove the power plug from the power outlet
Instructs the user to remove the power plug from the power outlet in the case of malfunction or
when there is a threat of lightning.
3. Symbols to give instructions for action
4. Symbols of international standards (IEC)
Symbol
Title and indication
Power on
Indicates in relation to the power switch that the device is connected to the power source.
Power off
Indicates in relation to the power switch that the device is not connected to the power source.
Type BF applied part
Indicates that the device is classified as Type BF in terms of the degree of protection against an
electric shock.
Bell silenced
Indicates either a control switch to silence the bell permanently or temporarily, or that the bell is
silenced.
Date of manufacture
Indicates the date when the unit was manufactured in the factory.
Recyclable (battery)
Indicates that recycling is recommended.
WEEE symbol
In the EC area, an electrical and electronic product falling in one of the categories specified by
“DIRECTIVE 2002/96/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 27
January 2003 on Waste Electrical and Electronic Equipment (WEEE)” should be disposed of in a
manner consistent with relevant laws and regulations.
This symbol indicates that the above-mentioned requirement applies to this product.
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