Information
PN 4477550 October 2015
©2015 Fluke Corporation. All rights reserved.
Specifications are subject to change without notification.
All product names are trademarks of their respective companies.
1662/1663/1664 FC
Electrical Installation Tester
Safety Information
Go to www.fluke.com to register your Product and find more
information.
A Warning identifies conditions and procedures that are dangerous
to the user.
Warnings
To prevent possible electrical shock, fire, or personal
injury:
• Use the Product only as specified, or the protection
supplied by the Product can be compromised.
• Carefully read all instructions.
• Read all safety information before you use the Product.
• Do not use the Product around explosive gas, vapor, or
in damp or wet environments.
• Comply with local and national safety codes. Use
personal protective equipment (approved rubber gloves,
face protection, and flame-resistant clothes) to prevent
shock and arc blast injury where hazardous live
conductors are exposed.
• Do not use the Product in distribution systems with
voltages >550 V.
• Use Product-approved measurement category (CAT),
voltage, and amperage rated accessories (probes, test
leads, and adapters) for all measurements.
• The battery door must be closed and locked before you
operate the Product.
• Examine the case before you use the Product. Look for
cracks or missing plastic. Carefully look at the insulation
around the terminals.
• Do not use test leads if they are damaged. Examine the
test leads for damaged insulation and measure a known
voltage.





