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Fluke CLKT Infrared Windows are Available in Three Sizes 50 mm (2 in), 75 mm (3 in) and 100 mm (4 in) Each CLKT infrared window is engineered and tested to withstand electric-arcs up to 50 kA for 30 cycles. The ClirVu® coating - exclusive to Fluke infrared windows - seals the optic prior to assembly to protect against moisture degradation making it perfect for very hot and very cold outdoor environments. Each Fluke infrared window is delivered with an identification plate attached for unique, on-site numbering for rapid location confirmation and faster repairs. CLKT infrared windows come complete with a security access key, installation instructions and self-adhesive drilling template. For 5 minute or less installation and Autoground consider the CV300.


  • Versatile laser distance meter that instantly measures up to 100 meters (330 feet) with one-button point-and-click operation
  • Quickly calculates area (square feet/meters) and volume
  • Includes 180° inclination sensor for leveling and height tracking
  • Offers enhanced Pythagoras calculation for determining distance indirectly from three other measurements


  • True RMS Digital Multimeter with detachable display
  • Measures up to 1000 VAC and DC
  • Measures up to 10 A (20 A for 30 seconds)
  • Provides a 10,000 μF capacitance range
  • Measures frequency to 50 kHz
  • Includes a built-in thermometer to measure temperature without a separate instrument


  • Safety first. Connect the insulation tester then keep yourself out of harm's way by monitoring your test measurements remotely.
  • Prove your job is done right by quickly seeing and sharing insulation resistance test results wirelessly with your smartphone.
  • Quickly find problems by saving and comparing measurements over time on a wireless device.


  • Full featured tester for installation professionals
  • Tests to all local regulations and provides test results for complete documentation
  • Tests continuity at L-N, N-PE inputs
  • Tests smooth dc sensitive RCDs (Type B)
  • Tests earth resistance, voltage, and frequency
  • Offers multiple test voltages: 50 V, 100 V, 250 V, 500 V, 1000 V