4
1. Checking the Contents of the Package
After opening the package, be sure to check the product as
instructed below before use.
1. Main Unit: CW10 (including battery)
2. Test leads: 1set (Black and Red)
3. User’s Manual
4. Soft Case
2. Measurement Category
When you use the test leads, attach or remove the caps
according to the measurement category.
CW10 main unit:
1000V
CAT III, 600V CAT IV
Test leads:
With Caps: 1000V 10A CAT III, 600V 10A CAT IV
Without Caps: 1000V 10A CAT II
Measurement
Category
Description Remarks
O
None
Other
Other circuits that are not
directly connect to MAINS.
Circuits not
connected to a
mains power source.
CAT II
For measurement performed
on circuits directly connected
to the low-voltage installation.
Appliances,
portable equipment,
etc.
CAT III
For measurement performed
in the building installation.
Distribution board,
circuit breaker, etc.
CAT IV
For measurement performed
at the source of the low-voltage
installation.
Overhead wire,
cable systems, etc.
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