Mammoth Lighting Par Meter and Spectrometer with Wand, Case, and 3.5 inch Touch Screen 380-780 nanometer 1/ each

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Mammoth M400 PAR Meter & Spectrometer + Free Wand

The Mammoth M400 is a professional-grade PAR meter and spectrometer built for growers, researchers, and lighting professionals who need accurate, full-spectrum measurements in one portable device.

Developed in collaboration with our manufacturing partners, the M400 combines a high-speed CPU with a precision CCD optical sensor and advanced spectroscopy system to deliver lab-level accuracy in a compact, field-ready instrument.

With full spectral analysis from 380–780nm and PPFD readings within 5% of leading lab-grade meters, the M400 gives you the performance of $2,000+ instruments at a fraction of the cost.

Most PAR meters over $500 only provide basic PPFD readings.
The M400 delivers complete spectral data, advanced analysis tools, and professional accuracy in one device.

💻 You can download spectral data using our beta software (3rd-party developing). Please Note: functionality is limited, may not work on all computers, and support is not currently available as it is 3rd party Beta right now.

Key Features

Lab-Level Optical Performance

• 2nm spectral bandwidth for precise measurements
• Full wavelength range: 380–780nm
• PPFD accuracy within 5% of leading professional meters
• Stable, repeatable readings across all light sources

Advanced Spectroscopy System

• High-precision CCD optical sensor
• Minimum integration time: 50 μs
• Detects both high-intensity and low-intensity light
• Adjustable integration for different environments

Portable, Durable Construction

• Lightweight, all-aluminum alloy body
• Compact, field-ready design
• Built for daily professional use

Intuitive Touchscreen Interface

• 3.5" HD IPS capacitive touchscreen
• Smooth, responsive operation
• Clear, easy-to-read data display

Long Battery Life

• Up to 24 hours of continuous testing
• Quick start and one-click measurement

Measurement Capabilities

The M400 provides a full suite of lighting analysis tools:

• PPFD (PAR) measurement
• Full spectral distribution map
• Color temperature (CCT)
• Illuminance (lux)
• Irradiance (W/m²)
• Chromaticity coordinates (x,y)
• Relative spectral power distribution
• CRI (Ra, R1–R15)
• Chromaticity and color tolerance maps
• Peak wavelength and half-width analysis
• Color ratio analysis (red, green, blue)

Data Export (Beta Software)

• Per-nanometer spectral data export available
• Requires third-party beta software
• Functionality may vary by computer
• Limited support during beta phase

Technical Specifications

• Model: M400 Spectral Color Illuminometer
• Wavelength Range: 380–780nm
• Sensor: High-precision CCD
• Spectral Bandwidth: 2nm (FWHM)
• Resolution: 0.2nm
• Wavelength Accuracy: ±0.5nm
• Chromaticity Accuracy: ±0.0015
• Illuminance Range: 0.1 lux – 2,000 Klux
• CRI Accuracy: ±1.5%
• Display: 3.5" IPS HD touchscreen
• Color Temperature Range: 1,000K – 100,000K
• Battery Life: Up to 24 hours continuous use

Built for Real-World Lighting Professionals

Whether you’re dialing in a commercial grow, testing fixtures, or performing research, the Mammoth M400 delivers accurate, full-spectrum data in a rugged, portable package.

Professional performance. Full spectral insight. Real-world value.