Check the listing for details. Light Meter Photography Full-Spectrum Quantum Sensor Par Meter Smart PPFD Tester. Condition: New. Listed at 87.90 USD. This Advanced PAR Light Meters is a must-have tool for all growers measuring Photo Synthetically Active Radiation (PAR) flux in wavelengths ranging from 400 to 700nm. There is a proportional relationship between the band and the number of photons absorbed in the 400 to 700nm band and the rate of photosynthesis in plants, which is important for horticulture studies and monitoring plant physiology. SPECIFICATIONS: PPFD (Photosynthetic Photon Flux Density) Measurement Range: 0~5000 μmol/m²/sec Repeatability: ±1 μmol/m²/sec Display Resolution: 0.01 μmol/m²/sec (0~99.99); 0.1 μmol/m²/sec (100~999); 1 μmol/m²/sec (1000~5000) Measuring rate: 1 measurement per second Cut-On Wavelength: 400±10nm Cut-off Wavelength: 700±10nm Power Requirements: 2 x 1.5V AAA alkaline battery Dimension: 115 x 60 x 24mm Weight: approx. 115gms (without batteries) 【FEATURES】Portable PAR quantum meter measures Photosynthetically Active Radiation in wavelengths ranging from 400 to 700nm under all grow-lighting used for plants. Measure up to 5,000umol/(㎡s) and record 100 measured data. 【COLOR LCD SCREEN DISPLAY】user can see the last 4 recorded PAR (PPFD) readings and also display the battery strength. It will prompt the user when there is a need to replace the battery. It also features MAX/MIN/AVERAGE/HOLD functions. 【Record Up to 100 Measured Values】With its robust data storage capability, the LUX Meter has the capacity to record and store up to 100 measured values. 【Tripod Socket available】A tripod socket enhances the meter's versatility by enabling secure attachment to a compatible tripod (tripod not included). This feature is beneficial when you require a steady setup for precise measurements, allowing you to avoid potential sources of measurement error caused by instability. 【WIDE APPLICATION】Use to measure the light intensity for both terrestrial and underwater plants. Effectively optimize lighting when growing high-value crops such as micro greens, coral reefs, chili peppers, and many more.