The PG100N has been superseded by the PG200N

Read on about the PG200N, or for any further questions about support and service for predecessor products, please Contact Us.


PPFD, PFD, Plant Factory,Quantum PAR meter

UPRtek PG100N Handheld plant growth lighting detector

PG100N Handheld Spectral PAR meter is focused on achieving the demands of agricultural field. It shows its own advantages of measuring functions ,such as spectrum, PPFD and PFD so that users can utilize these parameters in the plant factories. Meanwhile, PG100N Spectral PAR Meter offers the analysis report for users to understand the ambient light requirement of plant growth, timely adjust the artificial light source to make sure the efficiency of the agricultural production, safty, achieve a scientific, intelligent agricultural environment.



The plant growth’s success formula – PPFD (photosynthetic photon flux density)

What is PPFD?

It means how many photons hit a defined area in one second. PPFD is the unit of measure, defined by μmol/m2/s or micro-moles of photons falling on a square meter per second. Plant has various species and different categories which have different PPFD requirements.

Normally, Photosynthetically available Radiation (PAR) wavelength is 400nm – 700nm. The light intensity has valuable effects on the plant due to the different wavelengths.

Blue light (400nm – 500nm) – High absorption of chlorophyll and carotenoids influences the photosynthesis greatly.

Green light (500nm – 600nm) – Low absorption by pigments.

Red light (600nm – 700nm) – Improving plant flowering and germination.

UV light (400nm↓) – Inhibition of plant growth but good for plant pigment generation.

FR light (700nm↑) – Adjustments of flowering and germination.

Users can easily understand the environmental requirement of plant growth and adjust the artificial light clearly through the PPFD & PFD UI.Ensure the horticulture high production, safety and achieve the scientific, intelligent cultivation environment.



The Sensor head conforms with the JIS AA Class and DIN B Class Illumination requirements. Overall, the measuring process has a high speed, accuracy and stability.

It is recommended for the horticultural Factory , Green house and City farmers.



Multiple measuring choices and unlimited space and distance.

Real time detection and gathering the data which improve the measuring efficiency and flexibility.。



Free downloadable APP- Android, iOS and PC uSpectrum Software.

Make your measurement process easy and start using the device hassle-free.




【UPRtek Unbox】uSpectrum APP – Main Screen and Tool Introduction_EN

【UPRtek Unbox】Wing File Setup – Naming/Search/Delete_EN

【UPRtek Unbox】Wing WiFi Card Connection_EN

【UPRtek Unbox】Tripod Bracket_EN

【UPRtek Unbox】Strap Installation_EN

Wing Wi-Fi Wireless Control Card

UPRtek offers Wing Wi-Fi wireless remote control card to work with handheld spectrometer to break through environmental constraints and allow you to measure and share data any time and any where.

uSpectrum PC Software

UPRtek design and produce handheld spectrometer not only provides an easier measurement method, but also abundant spectral information which is widely used in optics field. The handheld

Mobile Spectrum APP

UPRtek has extensive experience in mobile APP design and development. Designe the uSpectrum APP for UPRtek handheld spectrometer series. It provides App Store and Google Play the mos

LEDs are everywhere now, so UPRtek handheld spectral measurement devices have become a valuable tool in a wide ranging scope of industry, academics and commerce.  ▸Read On

Handbook Series

The Flicker Handbook

Everything thing you need to know about Flicker, an insidious, potentially serious lighting artifact impacting visual safety for public places like hospitals, offices, libraries, and more...

▸ Get it!

About UPRtek

United Power Research and Technology

UPRtek (est. 2010) is a manufacturer of portable, high-precision light measurement instruments; Handheld Spectrometers, PAR meters, Spectroradiometers, Light Calibration Solutions.

UPRtek HQ, R&D and manufacturing are all based out of Taiwan, with Worldwide representation through our certified Global Resellers.

▸ Read on


Medical Setting using LED or Fluorescent Lights

What is a Spectrometer, Spectrophotometer, Spectroradiometer?

In the realm of spectral devices, three devices stand out: a Spectrometer, a Spectrophotometer, and a Spectroradiometer. However, these terms have been so interchangeably used that we felt obligated to clarify their differences in one short article.

  ▸ Spectrometer v Spectrophotometer v Spectroradiometer