How is the SQ-617 different from previous Apogee quantum sensors?
The SQ-617 is an extended photosynthetically active radiation (ePAR) SDI-12 sensor with a spectral range of 400 to 750 nm ± 5 nm, which can be seen in the graph below.
Where is the SQ-617 used?
The SQ-617 is used for measuring the newest generation of LED grow lights with wavelengths outside the traditional 400-700 nm PAR range. Research has shown the value of adding far-red LEDs to fixtures to achieve various disease control and photomorphogenic effects. The extended range filter of the SQ-617 allows it to measure photons from PAR and Far-red.
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