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UPRtek MF250N Flicker Meter


The MF250N Flicker Meter provides key metrics that lighting experts need to ensure light quality and to address Flicker and its associated health-related issues.  The MK250N is able to accurately measure flicker percentage from 1-100%.
  • Industry-leading Flicker measurement instrument
  • Supports Flicker Index, Percent Flicker measurement
  • Meets IES/ASSIST/ENERGY STAR/VESA specification definition
  • Standalone operation, no need for smart phone or PC connection
  • Light flicker frequency measurement
  • Spectrum diagram; 5 light units-of-measure
  • Flicker time & frequency domain real-time monitoring
  • 2-year product warranty
  • Package contents: MF250N Flicker Meter, hard case, protection bag, USB type C cable, lanyard strap, stand bracket, User Manual & Warranty booklet
Sold by Gamma Scientific as the exclusive distributor of UPRtek Handheld Spectrometers in the U.S. and Canada.


Need help?  Contact us:
800-637-2758 :


What is Flicker?
Why do you need to know the Flicker Index?
Why are international regulatory organizations paying attention to Flicker?

Flicker is silent and sometimes invisible and is
being implicated in triggering a host of health-related issues
such as
epilepsy attacks, migraines, fatigue, reduced visual task performance,
distraction and visual impairment…

MF250N Handheld Spectral Flicker Meter
Provides 3 major metrics that lighting experts use to fight Flicker
and to ensure light quality.

The 1st Handheld Flicker Meter with spectral technology.
Are you still worried about how to move the giant and heavy equipment out of the laboratory?
The MF250N Handheld Flicker Meter is light to carry
and can measure Flicker anytime and anywhere!

MF250N Flicker Meter
Measure the risk what you can’t see.
Keep the environment safer and stay healthy.

Flicker Mode
Measure Flicker Index, Percent Flicker, and SVM (Stroboscopic Visibility Measure)
are applicable to Solid-State Lighting, Liquid Crystal Display and photography.

Lightwave Mode
MF250N uses spectral technology to
help you measure light waveform and period.

FFT Mode
A quick computational tool that helps
you transfers the signal from time domain to frequency domain.

Additional Information

Weight3.74786 lbs
Dimensions1.08268 x 5.51181 x 7.48031 in


SensorCMOS Linear Image Sensor
Wavelength Range380 to 780 nm
Wavelength Data Increment2 nm
Spectral BandwidthApproximately 15 nm ( Half Bandwidth )
Wavelength Reproducibility± 1 nm *1
Measurement Range70 to 70,000  lx
Illuminance AccuracyIlluminant A @ 2,856 K at 20,000 lx± 5%
CCT Accuracy± 3.5%
CRI Accuracy @ Ra± 2.5%
Stray Light-25 dB max. *2
Integration Time Range6 to 1,200 ms
Digital Resolution16 bits


Measurement Range30 to 60,000 lx
Sampling Rate5k sample/sec
Frequency Range5 to 2,000 Hz
Frequency Resolution5 Hz
Flicker Accuracy± 5%


Capture FunctionOne time
Operation ModeStandalone Mode
Integration ModeAuto
Measuring Modes1. Basic Mode
2. Spectrum Mode
3. Flicker Mode
4. FFT Mode
5. Lightwave Mode
6. Option Mode
Measuring Capabilities1. Illuminance ( LUX )
2. Correlated Color Temperature ( CCT )
3. Color Rendering Index  ( CRI , Ra)/ R1 ~ R15
4. Flicker Frequency
5. Percent Flicker
6. Flicker Index
7. Stroboscopic Effect Visibility measure ( SVM )
8. Time Of Waveform ( Twave )
9. Spectral Power Distribution ( SPD )
10. Peak Wavelength ( λp )
11.  Intergration Time ( I-Time )

System Configurations

Display2.8″ 240X320 LCD
Max. Files≒ 2.7 millon Files @ 8GB Micro SD Card ( Excel )
Power4 AA Batteries ( Alkaline )
Data Output InterfaceMicro SD Card ( SD 2.0, SDHC / up to 32G)
Data FormatCompatible Excel
Dimensions180 x 65 x 30 mm ( H x W x D )
Weight280 g ± 10 g
Operating Temperature0 ~ 35 ℃
Storage Temperature-10 ~ 40 ℃
Display languagesEnglish
Cosine Correction
*1:Input source must be a stable light source.
*2:Input the 550nm monochromatic light and measure the stray light ratio at 550nm ± 40nm.The company reserves the right to change product specifications at any time without prior notice.

Product Warranty

Duration of Warranty2 years

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