Par Meter and Spectrometer

Mammoth M400 PAR Meter & Spectrometer

We worked closely with our suppliers to bring you the M400 PAR Meter and Spectrometer — a cutting-edge tool engineered for precision, stability, and performance. Built with a high-speed CPU and a high-precision CCD optical sensor, it uses a long focal cross asymmetric CT spectroscopy system to deliver results that rival lab-grade instruments. 

380nm - 780nm Accuracy withing 5% of Apogee and $2000+ lab ppfd meters.  

Most PAR meters cost $500+ for basic PPFD readings only. The M400 gives you full spectral analysis at a fraction of the price.

💻 Data Export Option: 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

1. Advanced Optical Technology

   • 2nm optical resolution for precise measurements

   • Wide wavelength range (380–780nm) for complete spectral coverage

   • Stable, consistent performance

2. Electronic Shutter System

   • Minimum integration time: 50 μs

   • Detects both strong and weak optical signals

   • Adjustable integration for versatility

3. Portable, Durable Design

   • Lightweight, all-aluminum alloy body

   • Modern, compact form factor

4. Open Operating System

   • Upgraded OS with source code access

   • Unlimited upgrade potential

5. Intuitive Interface

   • 3.5" HD IPS capacitive touchscreen

   • Realistic graphics, smooth operation

   • User-friendly display and navigation

6. Convenience + Power

   • Quick on/off and one-click testing

   • 24-hour battery life for extended use

Function Capabilities

• PPFD PAR: Photosynthetic Photon Flux Density measurement

• Spectral Distribution Map: Full spectral profile

• Color Temperature (Tc K): Accurate lighting analysis

• Illuminance (E lx): Lux measurement

• Irradiance (Ee W/m²): Light intensity

• Chromaticity Coordinates (x,y)

• Relative Spectral Power Distribution P(λ)

• CRI (Ra, Ri 1–15): Full-spectrum color rendering accuracy

• Chromaticity & Color Tolerance Maps

• Wavelength Data: Main, peak, half width

• Color Ratios: Purity, red, green, blue analysis

• Export Capability: Per-nanometer spectral data

Technical Specifications

• Model: M400 Spectral Color Illuminometer

• Wavelength Range: 380–780nm

• System: Long focal cross asymmetric CT split beam

• Sensor: High-precision CCD

• Spectral Bandwidth: 2nm (FWHM)

• Resolution: 0.2nm

• Wavelength Accuracy: ±0.5nm

• x,y Accuracy: ±0.0015 (±0.0005 repeatability)

• Illuminance Range: 0.1 lux – 2,000 Klux

• CRI Accuracy: ±1.5%

• Screen: 3.5" IPS HD touch display

• Color Temp Range: 1,000K – 100,000K

• Battery Life: 24 hours continuous testing

🔬 Whether you’re a professional grower, researcher, or lighting enthusiast, the M400 PAR Meter & Spectrometer redefines accuracy, portability, and value. It’s the future of cannabis lighting measurement — at a price that makes sense.