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2. PRODUCT SPECIFIC SAFETY INFORMATION
Measurement Category III (CAT III) is applicable to test and
measuring equipment connected to the distribution part of the
building's low-voltage MAINS installation.
Measurement Category IV (CAT IV) is applicable to test and
measuring equipment connected at the source of the building's low-
voltage MAINS installation.
2.1 Precautions
This product has been designed with your safety in mind, but please
pay attention to the following warnings and cautions before use.
Warning
Before use check the unit for cracks or any other damage. Make
sure the unit is free from dust, grease and moisture. Also check any
associated leads and accessories for damage. Do not use if damaged.
Warning
Do not use if the battery/fuse cover is not fitted.
Warning
Always test this unit on an appropriate proving device or known
voltage source before and after using it to determine if a hazardous
voltage exists in a circuit to be tested. See 3.6.
Warning
When using the sensor clips, always keep your fingers behind the
finger guards.
Warning
If one or more phase live LED's do not illuminate, this does not
necessarily mean the phase or phases suspected of being open
2
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