Product Description Quantum PAR meter is fully portable handheld PAR meter features our highly accurate, integrated Quantum Sensor that measures PAR (photo synthetically active radiation) flux in wavelengths ranging from the 400 to 700 nm. It measures up to 10, 000 MOL compared with 2, 000 moll for other meters on the market. Upgraded Quantum Par Meter This fully portable handheld PAR meter features our highly accurate, integrated Quantum Sensor that measures PAR (Photosynthetically Active Radiation) flux in wavelengths ranging from 400 to 700 nm. It measures up to 10,000 ?mol/s compared with 2,000 ?mol/s for other meters on the market. Features : 1.ACCURATE and COST EFFECTIVE: The Advanced Quantum PAR Meter provides measurement for any light source used in horticultural applications. MEASURES BROAD SPECTRUM: The Advanced Quantum PAR meter is designed to measure PAR (Photosynthetically Active Radiation) flux in wavelengths ranging from 400 to 700nm. 2.MAXIMIZE CROP YIELDS: There is a positive proportional relationship between the number of photons absorbed in 400 to 700nm band and the rate of photosynthesis. COMPACT and COMPLETE main unit, remote sensor, two connection cables (short-coiled 12’ long-straight), AAA batteries. 3.RELIABILITY: Phantom’s track record of robust reliability and performance in horticultural equipment 4.SIMPLE and EASY OPERATION: Easy operation, hand held, with recording of up to 99 readings 5.COMPATIBLE with modern sole-source and supplemental LED fixtures, high pressure sodium (HPS) DE grow lights, as well as any traditional indoor grow light source 6.STORE UP TO 99 measurements for easy reference while adjusting light fixture height, dimmer setting and other environmental changes throughout each phase of growth. 7.Save Money- Best selling AND useful for your indoor growing plants and 3.get you in the ball park of light requirements and testing for half the cost. (Higher quality and cheaper than old model) 8.All Indoor plant- Used for hydroponic/greenhouse/indoor plants. 9.High Precision- Constant linear response curve (as opposed to other meters’ Gaussian response) yields higher accuracy independent of wavelength—perfect for measuring LED light output. 10.Easy installation?Free return/exchange/refund if any concern? Patented in the USA: Automatic sun or electric light calibration modes ensure accurate readings no matter the source. Warranty: 2 year NOTE: QUANTUM PAR METER: GETTING STARTED 1. Remove your LFEQPM from the case. The meter should attached with 2 x 777AAA batteries. 2. Press the POWER button to turn on. Note that the meter will turn itself off 2 minutes after the last function, in order to conserve power. (this is not display or frozen) 3. To record a PAR reading manually, press HOLD while the meter is on and the sensor is located in the desired position. You will see the number in the upper right corner of the screen change to the next open slot. The slots are numbered from 0-99. You can take up to 100 sequential readings before the memory starts over at 0. 4. To review readings, simply press the up or down arrows. The measurements will be displayed along with the memory position. To return to real-time measurements, press HOLD. 5. To choose LOG mode, simply press the MODE button. You will see LOG appear under the PAR readout. Thank you for your trust and ordered from us, God bless you and your family! We love you ?