Apogee Instruments - SQ-500 Full-Spectrum Quantum Sensor

Brand: Apogee Instruments

The Apogee SQ-500 full-spectrum quantum sensor measures PAR/PPFD from 400-700 nm with high accuracy, accurate under all light sources including LEDs. Choose the output that matches your controller or logger.

All versions share the same research-grade detector (calibration uncertainty +/-5%, drift under 2%/yr, IP68); only the output differs.

Available Options

• Unamplified analog, 5m cable (SQ-500-SS)
• USB smart sensor with software, 4.5m (SQ-520)
• SDI-12 digital output, 5m cable (SQ-521-SS)
• Modbus digital output, 5m cable (SQ-522-SS)

Key Features

• Spectral range 400-700 nm +/- 5 nm
• Calibration uncertainty +/-5%, drift under 2%/yr
• Cosine-corrected, IP68 waterproof
• NIST-traceable, 4-year warranty
• Made in the USA and backed by Apogee's industry-leading warranty and support.

Ideal Applications

• Continuous canopy PPFD monitoring
• Controller and datalogger integration
• Light-uniformity studies