Mammoth M400 PAR Meter & Spectrometer
Advanced Full-Spectrum Light Analyzer for Indoor Lighting & Grow Applications
Measure light like a professional with the Mammoth M400 PAR Meter & Spectrometer — a precision optical instrument designed for serious indoor growers, researchers, and lighting specialists who demand accuracy. Engineered with a high-speed processor and a scientific-grade CCD sensor, the M400 delivers lab-level readings in a portable, user-friendly format.
With accuracy within ±5% of professional $2,000 lab meters, the M400 analyzes the entire visible spectrum (380 nm – 780 nm), providing full PAR data, color rendering, and intensity information for any light source — LED, HID, CMH, fluorescent, or sunlight.
While most PAR meters measure only PPFD, the Mammoth M400 is a complete spectral analyzer that shows you why light performs the way it does. Its long-focal optical system and advanced CPU deliver rapid, high-resolution measurements that capture the true quality of light — not just quantity.
From color temperature and CRI to blue:red ratios and spectrum uniformity, the M400 helps you fine-tune any lighting environment for maximum efficiency and performance.
Built with open software architecture for future updates, this device offers professional-grade accuracy in a handheld design — at a fraction of the price of lab instruments.
Q: What does the M400 measure?
A: It measures PPFD (PAR light intensity), spectrum distribution, color temperature, CRI, lux, and irradiance for any light source.
Q: Can it be used for LED grow lights?
A: Yes. It’s compatible with all light types including LED, HPS, CMH, and fluorescent — ideal for testing indoor lighting performance.
Q: How accurate is it?
A: Accuracy is within 5% of Apogee and lab-grade spectral analyzers costing over $2,000.
Q: Does it store or export data?
A: Yes. It includes a data export option through beta software (currently PC-based and optional).
No ratings. Be the first to rate
customer ratings
Share your thoughts with other customers