Iwatsu SS-500 Series Instruction Manual page 9

Indicates an action that must not be performed.
Indicates an action that must be performed.
Symbols shown on the device
Indicates the presence of a potential hazard. For more
information about locations where this symbol appears
on device components, see the "Usage Notes" section
(p. 8 ), warning messages listed at the beginning of
operating instructions.
Indicates that the device can only be used at a location
on an insulated wire with sufficient insulation for the
circuit voltage.
Symbols for various standards
Indicates the Waste Electrical and Electronic Equipment
Directive (WEEE Directive) in EU member states.
Indicates that the product complies with standards
imposed by EU directives.
Notations
3