REED K4020-NIST Digital Stroboscope, 110V

Original price was: $365.00.Current price is: $346.75.



REED K4020-NIST Digital Stroboscope, 110V

Reed K4020-NIST Datasheet (PDF)

High accuracy, includes tripod mount for stationary use.

REED K4020 Offers

This digital stroboscope freezes the motion and measures the speed of a rotating object, without contact. The K4020 features flash rate speeds from 100 to 10,000 RPM, a xenon light bulb and bright LED display.


  • Simply aim the instrument at the rotational object and synchronize the strobe’s flash rate (FPM) with object speed (FPM)
  • Basic accuracy of ±0.05%
  • 4-digit LED display
  • 5 to 30 minute duty cycle (RPM dependent)
  • Tripod mount for stationary use
  • 6 foot power cord


Flash Range 100 to 10,000 RPM
Resolution 1 RPM
Basic Accuracy ±(0.05% + 1 dgt.)
Flash Tube Specifications
Type Xenon lamp
Flash Duration Approx. 60 to 1000 µs
Flash Color Xenon white 6,500°K
Flash Energy 4 Watt-seconds (joules)
Beam Angle 80 degrees
General Specifications
Response Time <1 sec
Sampling Time 1x/sec
Display Size/Type 4 Digit LED Display
Tripod Mount Yes
Power Supply 110VAC, 50/60 Hz
Product Certifications CE
Operating Temperature 32 to 122°F (0 to 50°C)
Storage Temperature -4 to 140°F (-20 to 60°C)
Operating Humidity 10-80%
Dimensions 8.3 x 4.8 x 4.8″  (201 x 120 x 120 mm)
Weight 2.2lbs (1kg)

What’s included with the REED K4020-NIST

  • Digital Stroboscope
  • Light Bulb
  • Power Cord
  • Calibration Certificate

High Accuracy K4020 Digital Stroboscope

Observe motors and other rotating machinery with digital stroboscopes. The REED K4020 measures the speed of moving gears, fans, centrifuges, pumps, motors and other rotational equipment.

Ideal Applications

Measure speed of moving gears, fans, centrifuges, pumps, motors and other rotational equipment.

Additional information

Weight 5 lbs
Dimensions 13 × 13 × 9 in

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