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  • Increased sensitivity to visualize temperature differences
  • Easier to visualize and diagnose issues with sharper onscreen images, multiple rectangle markers and 9 color palettes
  • More intuitive visual interface, improved, user-tested, touch screen interface
  • More flexibility to visualize target, tiny-to-large with interchangeable smart lenses - no calibration required, 2x and 4x telephoto, wide angle and macro lens compatibility
  • Capture a clear, accurate image focused throughout the field of view with MultiSharp™ Focus
  • Get an instant in-focus image of your designated target. LaserSharp® Auto Focus uses a built-in laser distance meter that calculates and displays the distance from your designated target.
  • Get 4x the pixel data with SuperResolution, which captures multiple images and combines them to create a 1280 x 960 image
  • Save time - wirelessly sync images directly from your camera to the Fluke Connect® system, and attach to an asset record or work order
  • Reduce the need take notes in the field with IR-PhotoNotes™ and voice annotations


  • Large display
  • Backlight for work in dim areas
  • Min / Max to record signal fluctuations
  • Ergonomic overmolded housing with integrated probe holders
  • Free your hands with the optional TPAK magnetic hanger
  • Auto and Manual ranging
  • Meets Measurement Category 1000 V CAT III and Category IV 600 V safety standards
The 77 IV replaces the 77. Move up to superior utility and safety today.


  • Four electrically isolated inputs
  • CAT III 1000 V / CAT IV 600 V safety rated
  • 200 MHz bandwidth model
  • 2.5 GS/s
  • Deep memory: 10,000 samples per channel waveform capture so you can zoom in on the details
  • Quad meter measurements via scope BNC inputs
  • Connect-and-View continuous auto-trigger, single shot, pulse width, and video triggering
  • ScopeRecord roll mode, capture waveform sample data for up to 48 hours
  • TrendPlot, trend measurement readings for up to 22 days
  • Advanced automatic measurements, power (Vpwm, VA, W, PF) and time (mAs, V/s, w/s)
  • IP-51 rated for dust and drip proof to withstand harsh environments
  • Isolated USB ports for memory devices and PC connectivity
  • Li-Ion battery for extended operating timespan: up to 7 hours (BP291 included standard)
  • Charge spare battery using optional external battery charger (EBC290)
  • Easy-access battery door to make it easy to swap batteries
  • A handy slot to tether and lock down the oscilloscope while unattended using a standard Kensington® lock


  • Customizable reports - display the information you need based on your application
  • Real time radiometric data streaming capability
  • Data trending and time plots
  • Advanced analysis features; Spot measures, lines/profiles, area/histograms, hot/cold markers, rulers, adjustable emmisivity by object, and more
  • Easy to use file management


  • True-RMS digital multimeter with the features professional technicians prefer
  • Increases productivity with manual and automatic ranging, Display Hold, Auto Hold, and Min/Max-average recording
  • Measures AC and DC voltage to 1000 V
  • Delivers accurate True-RMS AC current and voltage plus frequency, capacitance, resistance, continuity and diode measurements
  • Safety rated CAT III 1000 V, CAT IV 600 V