MK350N Premium Spectrometer


The MK350N Premium is a lightweight, portable and easy-to-use spectral illuminance (lux) meter or spectral light meter. It is designed for fast and accurate illuminance measurements for general lighting and LED applications.  Designed to be intuitive and user-friendly, it is ideal for measuring light parameters such as lux, CCT, CRI, CIE Chromaticity Coordinates, Ra, R1 to R15, wavelength and others.  The device also includes an integrated flicker meter.

Precision, Power and Portability in a Compact & Lightweight Package


  • Completely Stand-Alone Operation - no other equipment necessary (e.g., PC, Smartphone, etc.) 
  • More than 40 units of measurement
  • Built-in file browser allows for quick access to previously saved data
  • 3.5” color touch screen with intuitive menu selection
  • Conforms to ISO 14001, JIS, DIN and IECQ standards
  • Wi-Fi remote control option with IOS or Android applications
  • Automatic continuous measurements with data-save to an SD card
  • NIST Traceable calibration



Product Features

Capture Function

One-time or continuous

Operation Mode

Stand-alone, WiFi or USB (to PC, mobile device or tablet)

Integration Mode

Auto or Manual

Automatic Dark Calibration

Auto mode

Measuring Modes

Basic                                          Spectrum                         CRI                                                CIE 1931 Chromaticity

CIE 1976 Chromaticity               TM30-15                          Flicker                                            Frequency

Browser                                      Option

Measuring Capabilities

Light & Color Parameter

Illuminance (lux) or Foot-candle (FC)

Correlated Color Temperature (K)

CIE Chromaticity Coordinates

CIE 1931 x,y           CIE 1976 u’, v’      CIE 1931 XYZ

ΔX, ΔY, ΔU’, ΔV’

Delta UV; DUV

Dominant wavelength; Hue, ƛd (nm)

Chroma Purity (%)

Scotopic and Photopic ratio: S/P

Light & Color Evaluation

Color Rendering Index (CRI, Ra) R1 to R15

Color Quality Scale (CQS)

Gamut Area Index (GAI)

TM-30-15 (Rf, Rg, Color Vector Graphic)

Television Lighting Consistency Index (TLCI)


Flicker Frequency (Hz)

Flicker Percentage (%)

Flicker Index

Stroboscopic Effect Visibility Measure (SVM)

Spectral Radiation

Spectral Power Distribution (SPD) mW/m2

Peak Wavelength (ƛp) nm

Peak Wavelength Value (ƛpV) mW/m2

Integration time (I-time)

Scotopic and Photopic ratio (S/P)



CMOS linear image sensor

Wavelength Range

380 to 780 nm

Wavelength Data Increment

1 nm

Spectral Bandwidth

12 nm                                     (half power bandwidth)

Wavelength Reproducibility

± 1 nm                                    (assumes stable input light source)

Measurement Range

5 to 100,000 lux

Illuminance (1)




±  5%

 Repeatability (2σ)

±  0.2% from 100 to 100,000 lux

±  0.5% from 5 to 100 lux

Color (1,2)




x y: ±  0.002 from 100 to 100,000 lux

x y: ±  0.0025 from 5 to 100 lux


± 0.0005 in CIE 1931 x,y

 Repeatability (2σ)

x y: ±  0.0002 from 500 to 100,000 lux

x y: ±  0.0004 from 30 to 500 lux

x y: ±  0.001 from 5 to 30 lux

CCT Accuracy

± 2%

CRI Accuracy at Ra

± 1.5%

Stray Light

-25 dB maximum                     (550 ± 40nm monochromatic source)

Integration Time Range

100 µsec to 1 sec                    

Digital Resolution

16 bit



Measurement Range

5 to 100,000 lux

Sampling Rate

100 kHz

Frequency Range

5 to 50 kHz

Frequency Resolution

2, 4, 8, 16, 32 Hz

Flicker Accuracy

± 5%


System Configuration


320 x 240 (3.5 in) resistive touch LCD

Maximum Files

68,000 with 8 GB SD card, compatible with Excel® and JPG

Battery Operation

Up to 5 hours, onboard 3.7 V Li-ion

External Power

Adapter (included), 2500mAh via USB connector

Data Interface

SD card  (SD2.0.SDHC up to 32 GB) or  mini USB port (USB 2.0) or WiFi SD card (IOS or Android)


148 mm (5.9 in) H x 78 mm (3.1 in) W x 24 mm (.95 in) D                       225 g (0.5 lbs) including battery

Language Options

English, Traditional Chinese, Simplified Chinese, Japanese, Spanish, German, French, Italian, Russian

Camera Resolution

2M pixels

(1) At 23 ± 2° C and relative humidity ≤ 50%                                                                                               Specifications are subject to change without notice.

(2 )Illuminant A at 2,856 K at 20,000 lux

(3) 30 Hz AC/DC 10% sine wave unless otherwise specified