8 Introduction
fabian HFO | SW 5.1.x
Ref: 113003.EN / Date 2020-02-10
1.4 Symbols
The symbols defined in this section may appear in this document and on the equipment label or
labels.
CAUTION, refer to operator’s manual for important safety information and
precautions.
Dangerous voltage warning
Data input / output RS-232
Data input / output RS-232
DO NOT stack no more than 2 on top
Potential equalisation connection
Flammability/Fire hazard warning
External power supply input
Fragile, Handle with care
High Frequency interference warning