PG200N Handheld Spectral PAR Meter Is a precision tool designed for measuring Photosynthetic Photon Flux Density (PPFD) and Photosynthetically Active Radiation (PAR) over specific light wavelengths. It is ideal for monitoring light levels in horticultural applications such as greenhouses, grow rooms, and research facilities. https://uprtek.eu.com/handheld-spectrometers/pg200n/