Apogee Instruments MQ-500 Full-Spectrum Quantum PAR Meter - Digital PPFD Meter for Indoor Grow Lights, Sunlight & Plant Monitoring

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About This DR BRUCE BUGBEE: Apogee PAR meters have been designed and refined by Dr. Bruce Bugbee, a world-famous crop physiologist. PREMIUM QUALITY: The MQ-500 is preferred by scie ntists and serious growers for accurate PAR measurements. Our meters stay accurate and reliable while other budget PAR meters can have readings drift by over 50%. FEATURES: The rugged detector measures photosynthetic photons from 400-700 nm from any light source by taking instantaneous or logged measurements. RUGGED DESIGN: The sensor head is made of machined aluminum and fully potted, making it waterproof and rugged. The tangle-free cable facilitates measurements over a large plant canopy, while still allowing the user to view the high-contract display screen. MANUFACTURED IN THE USA: All meters are backed by our four-year warranty and supported by our US-based customer support team. Show more