The new Fluke 1660 Series Installation Testers are the only ones which prevents damage from connected appliances and allows users to send test results wirelessly via smartphone directly from the field. Safety - thanks to a new and slim test probe with an integrated test key, it is now possible to effortlessly carry out the tests with one hand. Reliability - FI switches are not triggered by the new measurement method during the earth loop resistance test; also the measurement without interrupting the operation is possible. Insulation PreTest - Protects the Installation by warning You about potentially serious and expensive mistakes. Tester detects appliances which occurs during the test and will stop the insulation test with a Visual and Audible warning. Eliminates accidental damage to peripheral equipment. 

• Reduce test time up to 40% with Auto Test
• For low ohm measurement, continuity check, insulation resistance, earth loop resistance, short circuit current, polarity and RCD testing
• Very rugged in order to withstand the tough ambient conditions
• Big formatted, illuminated display, universal graphic symbols and language support (German, French, Italian, Spanish and English), uncomplicated menu guidance
• Protocol creation - Measurement results can be filed in the internal memory, these are then available via the PC, for preparing the client specific reports
• On/Off switchable Auto Start for RCD and Looptest
• Heavy duty mains cord with single input connector
• Complies with IEC/EN61010-1, UL61010, ANSI/ISA -s82.02.01 and CAN/CSA c22.2 No. 1010
• Performance Standarts - EC/EN61557-1 to IEC/EN61557-7 and IEC/EN61557-10
• -1663 and 1664FC also includes all functions followed:
• Continuity at L-N, L-PE, N-PE inputs
• Z Max memory