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AC
Alternating current of device. Please check the region’s voltage range.
DC
Direct current
of device. Please check the region’s voltage range.
Grounding
Frame and chassis grounding terminal.
Grounding
Protective grounding terminal.
Grounding
Measuring grounding terminal.
OFF
Main power off.
ON
Main power on.
Power
Supply
Standby power supply: when the power switch is turned off, this device is not
completely disconnected from the AC power supply.
CAT I
Secondary electrical circuit connected to wall sockets through transformers or similar
equipment, such as electronic instruments and electronic equipment; electronic
equipment with protective measures, and any high-voltage and low-voltage circuits,
such as the copier in the office.
CAT II
CATII: Primary electrical circuit of the electrical equipment connected to the indoor
socket via the power cord, such as mobile tools, home appliances, etc. Household
appliances, portable tools (e.g. electric drill), household sockets, sockets more than
10 meters away from CAT III circuit or sockets more than 20 meters away from CAT
IV circuit.
CAT III
Primary circuit of large equipment directly connected to the distribution board and
circuit between the distribution board and the socket (three-phase distributor circuit
includes a single commercial lighting circuit). Fixed equipment, such as multi-phase
motor and multi-phase fuse box; lighting equipment and lines inside large buildings;
machine tools and power distribution boards at industrial sites (workshops).
CAT IV
Three-phase public power unit and outdoor power supply line equipment. Equipment
designed to “initial connection”, such as power distribution system of power station,
power instrument, front-end overload protection, and any outdoor transmission line
Certification
CE indicates a registered trademark of EU.
Certification
UKCA indicates a registered trademark of United Kingdom.
Certification
ETL indicates a registered trademark of Intertek.
Waste
This product complies with the marking requirements of WEEE Directive
(2002/96/EC). This additional label indicates that this electrical / electronic product
must not be discarded in household waste.
EFUP
This environment-friendly use period (EFUP) mark indicates that dangerous or toxic
substances will not leak or cause damage within this indicated time period. The
