Technical Requirements For LED-based Horticultural Lighting

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Technical Requirements forLED-based Horticultural Lighting124Version 2.1Proposed Effective Date: September 1, 20215678910Horticultural lighting products using LEDs must comply with the provisions of this document to beeligible for listing on the DLC Solid-State Horticultural Lighting Qualified Products List (“HorticulturalQPL”, “Hort QPL”). Products eligible for DLC qualification must be complete LED light fixtures or lamps.That is, they must be electromagnetic radiation-generating devices analogous to luminaires (or fixtures)or LED lamps (integrated and non-integrated) as defined by ANSI/IES LS-1 sections 6.8.5 and 10.3.1 or6.8.5.3 and 6.8.5.4, respectively.1112131415Version 2.1 of the Horticultural Technical Requirements establishes eligibility and performance criteriafor three new horticultural lighting product types: externally supplied actively cooled fixtures, DCpowered fixtures, and LED replacements for linear fluorescent and HID lamps. These new requirementssupport the qualification of fixtures that enable greater whole facility energy savings by removing excessheat from the grow environment, among other strategies.16Definitions171819202122Unless otherwise noted, DLC policy nomenclature directly references the definitions from the AmericanSociety of Agricultural and Biological Engineers (ASABE) ANSI/ASABE S640: Quantities and Units ofElectromagnetic Radiation for Plants (Photosynthetic Organisms), and, where applicable, theIlluminating Engineering Society (IES) ANSI/IES LS-1-20, Lighting Science: Nomenclature and Definitionsfor Illuminating Engineering, with key deviations or interpretations noted. Each mention of the term“LED device” in this document is meant to reference LED packages, modules, or arrays.23Eligibility242526Products designed and intended to operate with standard North American nominal AC line voltages(typically 120V-480V) or with DC voltages below 600V are eligible for DLC qualification. The following arefurther eligibility rules for horticultural lighting equipment:3Technical Requirements for Horticultural Lighting V2.1Released June 30, 2021; Proposed effective date September 1, 2021Page 1 of 27

272829 Products that are light engines (analogous to LS-1 section 6.8.5.5) or identified as retrofit kitsintended to replace the light sources or other structures within an existing fixture are noteligible for qualification at this time.3031 Fixtures and/or lamps that incorporate light sources other than LED, whether as sole-source oras LED-hybrid fixtures, are not eligible for qualification at this time.323334 Products that are dynamically configurable, i.e. having no defined configuration or set ofconfigurations and whose form factor may vary in the grow facility, are not eligible forqualification as an AC product at this time.3536 Manufacturers must list full and complete model numbers that clearly demonstrate all qualifiedproduct options offered.373839404142o“Full and complete model numbers” means model numbers that include allperformance-affecting and non-performance-affecting variations offered, and that donot omit any option that is available to customers in the market. In general, options thatdo not affect the performance of the product can be submitted as a single modelnumber, and the multiple options can be denoted by bracketing them in the modelnumber.434445464748495051525354oFor example, a product that has multiple exterior paint color options or mountingoptions that do not affect performance may include all color and mounting options inbrackets (e.g. "[WH, BLK, SLV, GRY]") within a single model number. Low and highvoltage options may be submitted as a single model number (e.g. "ABC 300 [120V-277V,347V-480V] WH") with the worst-case performance reported. Multiple driver variationsmay be included in single product applications, as noted above, and listed in a singlemodel number, as long as they perform nominally the same. If the drivers performnominally differently – that is, they are not presented to customers as having the sameperformance other than voltage input and result in different ordering codes – then theunique drivers must be listed in separate model numbers. Options that affect the fluxoutput, presence or lack of dimming capabilities, or spectral tuning options cannot bebracketed and submitted as a single model number.555657585960oDLC reviewers may check web listings and other marketing materials and reserve theright to request additional information to demonstrate the full and complete modelnumber. A lack of clarity in model numbers will result in delayed application processing;misrepresentation of model numbers discovered outside the application process willgenerally be considered a violation of the DLC program and trademark rules and mayresult in delisting.616263oEach model number may only represent the fixture/lamp under a single brand. If thefixture/lamp can be sold under multiple brands, model numbers must be listedseparately for each brand.64Technical Requirements for Horticultural Lighting V2.1Released June 30, 2021; Proposed effective date September 1, 20212 of 27

65Testing Methods and Requirements6667The DLC Technical Requirements for LED-based Horticultural Lighting are as follows. Details explainingeach item follow Table 1.68Table 1: DLC Horticultural Lighting Technical equirementTypeMethod ofMeasurement/EvaluationPhotosynthetic Photon Flux(Φp or PPF)(µmol s-1)n/aReported(ANSI/IES LM-79)400-700nm range, with 400500nm, 500-600nm, and600-700nm bins reportedalongside the totalFar-Red Photon Flux(Φp,fr or PFFR)(µmol s-1)n/aReported(ANSI/IES LM-79)700-800nm rangePhoton Flux(PFPBAR)(µmol s-1)n/aReported(Optional)(ANSI/IES LM-79)280-800nm rangeSpectral QuantumDistribution(SQD)(µmol s-1 nm-1)n/aReported(ANSI/IES LM-79)(ANSI/IES TM-33-18)400-800nm rangePhotosynthetic PhotonIntensity Distribution(IP or PPID)(µmol s-1 sr-1)n/aReported(ANSI/IES LM-79)(ANSI/IES TM-33-18)400-700nm rangePhotosynthetic PhotonEfficacy 1(Kp or PPE)(µmol J-1) 1.90 µmol J-1Required/Threshold(ANSI/IES LM-79)400-700nm rangePhoton Efficacy(PEPBAR)(µmol J-1)n/aReported(Optional)(ANSI/IES LM-79)280-800nm rangeDC-powered fixtures must meet the PPE threshold requirement at their AC de-rated PPE value. See “Special Considerations forDC-Powered Fixtures” for more information on AC de-rating.1Technical Requirements for Horticultural Lighting V2.1Released June 30, 2021; Proposed effective date September 1, 20213 of 27

Parameter/Attribute/MetricPhoton Flux Maintenance,Photosynthetic(PFMP)Photon Flux Maintenance,Far-Red(PFMFR)RequirementQ90 36,000 hoursReport time to Q90RequirementTypeMethod S LM-80 / IES TM-21or IES LM-84 / IES TM-28)400-700nm range,fixture technical specificationsheet, and In-SituTemperature MeasurementTest (ISTMT)Reported(ANSI/IES LM-80 / IES TM-21or IES LM-84 / IES TM-28)700-800nm rangeDriver Lifetime 50,000 hoursRequired/ThresholdDriver technical specificationsheet, fixture technicalspecification sheet, and InSitu TemperatureMeasurement Test (ISTMT)Fan Lifetime 50,000 hoursRequired/ThresholdFan technical specificationsheet, fixture technicalspecification sheetWarrantyFixtures: 5 yearsLamps: 3 yearsRequired/ThresholdLegal warranty terms &conditionsPower Factor(PF) 0.9Required/ThresholdBenchtop electrical testingor ANSI/IES LM-79Total Harmonic Distortion,Current(THDi) 20%Required/ThresholdBenchtop electrical testing orANSI/IES LM-79Safety CertificationHorticultural Lightingdesignation by OSHANRTL or SCCrecognized bodyRequired/ThresholdANSI/UL 8800(ANSI/CAN/UL 8800)6970Technical Requirements for Horticultural Lighting V2.1Released June 30, 2021; Proposed effective date September 1, 20214 of 27

71Output Characteristics7273The DLC requires testing and reporting of the following characteristics for the output of horticulturallighting devices.74757677 78798081828384The DLC Horticultural QPL reports on both the total and 100nm-wide “bins” of flux within thisrange to allow end users to understand the fixture’s relative proportions. Test information mustprovide output in these ranges specifically, in addition to the total 400-700nm output. 85868788899091103104105106107Far-Red Photon Flux (Φp,fr or PFFR), (µmol s-1)This is the output of the product over the “far-red” band defined by ANSI/ASABE S640 (700800nm). This metric is an integrated value for the entire fixture and contains no spectral ordirectional information. This metric is reported only and does not have a qualifying threshold.The DLC Horticultural QPL reports on the total flux of this 100nm-wide band separately for endusers’ informational needs. 9293949596979899100101102Photosynthetic Photon Flux (Φp or PPF), (µmol s-1)This is the total output of the product over the specific range of wavelengths defined byANSI/ASABE S640 for PPF (400-700nm). This metric is an integrated value for the entire fixtureand contains no spectral or directional information.Photon Flux (PFPBAR), (µmol s-1)This is the output of the product over a plant’s “photobiologically active radiation” (PBAR)wavelength range (280-800nm). This metric is an integrated value for the entire fixture andcontains no spectral or directional information. This metric is optionally reported only and doesnot have a qualifying threshold.The DLC Horticultural QPL reports on the total flux of this PBAR band specifically for end users’informational needs. PFPBAR is intended to convey UV, PAR, and FR radiation, which are oftenassociated with photomorphological effects in plants. PFPBAR is not an ASABE S640 defined termand is not required for DLC qualification, though it can be reported and listed if desired byapplicants. Photon Efficacy (PEPBAR), (µmol J-1)This is the output of the product over a plant’s “photobiologically active radiation” (PBAR) band(280-800nm) divided by the total electrical input watts to the fixture, including any otherancillary loads (controllers, sensors, cooling fans, etc.) used within the lighting system. Thismetric is an integrated value for the entire fixture and contains no spectral or directionalinformation. This metric is optionally reported only and does not have a qualifying threshold.The DLC Horticultural QPL reports on the total flux of this PBAR band specifically for end users’informational needs. PEPBAR is intended to convey luminaire efficacy in converting electricalenergy into UV, PAR, and FR radiation, which are often associated with photomorphologicaleffects in plants. PEPBAR is not an ASABE S640 defined term and is not required for DLCqualification, though it can be reported and listed if desired by applicants.108Technical Requirements for Horticultural Lighting V2.1Released June 30, 2021; Proposed effective date September 1, 20215 of 27

109110111112113114115116117 Spectral Quantum Distribution (SQD), (µmol s-1 nm-1)This is the distribution of photon flux per photon wavelength over the photosynthetic and farred range of wavelengths defined by ANSI/ASABE S640 (400-800nm). The DLC will also acceptthe distribution of photon flux per photon wavelengths over the PBAR range (280-800nm).When reporting either of the optional PBAR metrics (i.e. PFPBAR and PEPBAR), distribution ofphoton flux over the PBAR range is required. This distribution is measured and reported asintegrated in all directions from the fixture and contains no granular directional informationitself. This distribution must be measured and reported from an appropriately accreditedfacility.118119120121An image of this distribution must be submitted within the application in a .jpg graphical fileformat, at a size of 300x300 pixels or larger. This image will be accessible to users on the QPL.The DLC intends to utilize the required .xml file per ANSI/IES TM-33-18 to generate these imagesin the future.122123Please refer to the TM-33-18 Reporting and Photometric/Spectral Reporting Alternatives sectionfor additional information.124125126127128 Photosynthetic Photon Intensity Distribution (IP or PPID), (µmol s-1 sr-1)This is the distribution of photosynthetic photon intensity per unit solid angle leaving the fixture.This distribution is measured and reported as integrated for all wavelengths across the 400700nm range leaving the fixture and contains no spectral distribution information itself. Thisdistribution must be measured and reported from an appropriately accredited facility.129130131132An image of this distribution is to be submitted within the application in a .jpg graphical fileformat, at a size of 300x300 pixels or larger. This image will be accessible to users on the QPL.The DLC intends to utilize the required .xml file per ANSI/IES TM-33-18 to generate these imagesin the future.133134Please refer to the TM-33-18 Reporting and Photometric/Spectral Reporting Alternatives sectionfor additional information.135136137138Note: The DLC will no longer accept distribution data that are developed through in-houseassessments. Products that were qualified prior to the V2.0 effective date must provide TM-3318 documents by December 31, 2021, to requalify to the V2.0 Technical Requirements, or theproducts will be delisted.139Efficacy140141142143The DLC requires testing and reporting of photosynthetic photon efficacy (PPE), which is the output ofthe fixture over the specific range of wavelengths defined by ANSI/ASABE S640 for PPF (400-700nm),divided by the total electrical input watts to the fixture, including any other ancillary loads (controllers,sensors, cooling fans, etc.) used within the lighting system.144145146147All products are required to have a PPE of 1.90 µmol J-1. In both submitted applications and undersurveillance testing, the DLC allows an absolute tolerance of -5% to this threshold value. The result ofthis is the DLC’s acceptance of any test report showing an efficacy of 1.81 µmol J-1 or higher, and thedisqualification of any product, either during submission or surveillance testing, with a test reportTechnical Requirements for Horticultural Lighting V2.1Released June 30, 2021; Proposed effective date September 1, 20216 of 27

148149showing an efficacy less than 1.81 µmol J-1, at any point in the product’s specified operating voltagerange. All evaluations and listings of this measurement will be rounded to the nearest hundredth.150If a product contains multiple drivers:151 All driver specification sheets must be provided.152153154 For each unique driver used, manufacturers must provide electrical testing to document whichdriver variation results in the overall minimum Kp (PPE) or worst-case driver efficiency, as well aswhich variation results in the overall worst-case power quality (THDi and PF).155156oThis testing must include the input current and wattage; the output voltage, current,and wattage; and the THDi and PF for each driver, at each nominal input voltage.157158159160oIn-house (i.e. non-accredited lab) benchtop electrical testing is sufficient fordemonstrating the driver variation that yields the overall minimum Kp (PPE) andminimum power quality at the applicable loading conditions and at the applicable inputvoltages.161162163oFrom this electrical characterization testing, the product and conditions representingworst-case efficacy must undergo formal whole-fixture LM-79 testing by an accreditedtesting lab.164165oFor questions about testing requirements for family grouping applications, please referto the Family Grouping Application Requirements for LED-based Horticultural Lighting.166167168169170 171172173Drivers that result in explicitly different nominal fixture performance (for example, a driverchange that results in different flux output by the product, determined at the DLC’s discretion)are not permissible variations within a single model number and are required to submit a familygrouping application for QPL listing. If alternate driver variations result in different inputwattage, worst-case will be published on the QPL.oPlease refer to the Family Grouping Application Requirements for LED-basedHorticultural Lighting for specific testing and reporting requirements for productfamilies.174Long-Term Performance175176The DLC requires the following performance data to characterize the long-term performance of thefixture:177178179180181182183184 Flux Maintenance, Φp (PPF) and Φp,fr (PFFR)This is a characterization of the ability of the device to maintain its output within the givenparameters over time. Given that device output of interest is measured in quanta of photons,and not in lumens, the DLC will use the general engineering term for quanta, “Q”, instead of themore-familiar “L” prefix used within general illumination applications.oThe DLC requires either LED device-level or whole-fixture testing and projections inaccordance with the (LM-80 and TM-21) or (LM-84 and TM-28) industry standardssufficient for a Q90 of 36,000 hours within the Φp (PPF) range (400-700nm).Technical Requirements for Horticultural Lighting V2.1Released June 30, 2021; Proposed effective date September 1, 20217 of 27

185186 The “Q” in the Q90 value is based strictly on the value shown in cell I42 of theENERGY STAR TM-21 calculator or cell I45 of the ENERGY STAR TM-28 calculator.187188189190oAll TM-21 or TM-28 projections must be made at the maximum ambient temperature onthe fixture’s specification sheet. See In-Situ Temperature Measurement Testing (ISTMT)information below for additional details. All temperature values shall be reported indegrees Celsius.191192193194oThe DLC requires testing and projections to report Q90 for the Φp,fr (PFFR) range of 700800nm, but does not make determinations or qualifications based on this data. Pleasesee a description of PFMFR-specific testing requirements in the “For fixtures usingmultiple types of LEDs” section below.195196oTo support PFMP and PFMFR projections, LM-80/LM-84 information must be provided forboth the 400-700nm and the 700-800nm range.197198199200201202 All new product submissions using the LM-80/TM-21 approach are required toprovide LM-80 data in appropriate (PPF, PFFR) units, measured as such at all timepoints in the LM-80 procedure. The DLC reserves the right to request additionalinformation for all reports referring to “photon flux” that are ambiguous (basedon product SQD) about the division of said flux between the PPF and PFFRcategories to determine approval.203204205206 Products qualified with non-PPF units that were converted into PPFunits during the provisional period (i.e. prior to V1.2) will be required toprovide LM-80 data in appropriate units to requalify under the V2.0Technical Requirements.207208209210 Provisionally qualified products will be allowed to update their listingsto remove any caveats by submitting actual data by December 2021.The DLC will process these update applications through the month ofDecember 2021.211212213214215216217218219220221222223224225 oProducts may not be qualified and listed on the QPL without long-termperformance data for flux degradation. Products that use LEDs for which no LM80 data is available are required to undergo LM-84 testing for TM-28projections.In-Situ Temperature Measurement Testing (ISTMT): ISTMTs must be conducted and provided for the hottest LED in the fixture, andLED-device level drive current must be reported. ISTMTs must be conducted and reported in the same manner as thermal testingfor safety certification. Specifically, applicants must report the operatingtemperature of the LED at the fixture’s highest rated ambient temperaturewithin the ISTMT report. This must be done in accordance with acceptableprocedures from safety certification standards for measuring and projectingoperating temperatures. For example, if a fixture is rated for operation at 40 Cambient, ISTMTs are not accepted if they only show the temperature of the LEDwhen measured during a 25 C ambient condition. In this example, appropriateTechnical Requirements for Horticultural Lighting V2.1Released June 30, 2021; Proposed effective date September 1, 20218 of 27

226227228229230231steps must be taken to characterize the LED operating temperature when thefixture is in a 40 C ambient environment, as defined by the thermal portions ofthe relevant safety standards.oFor fixtures using multiple types of LEDs: 232233234235236237238239240LM-80 reports (if being used instead of whole-fixture LM-84 data) must beprovided for each type of LED device present in the fixture. For DLC evaluations, LED “type” is differentiated by the nominal outputof the LED device or the manufacturer of that LED device. For example,a fixture incorporating four different LEDs, with nominal emissions of440nm, 660nm, 730nm, and a 5000K “white”, is required to providefour LM-80s and associated information for TM-21 projections,corresponding to each of these nominal designations. Some limitedcross-applicability of LM-80 data is allowed within phosphor-convertedwhite LEDs of the same series; see LM-80 applicability informationbelow.241242 ISTMT testing must be provided on the hottest of each LED type (for example,the hottest blue, white, and red LED in the fixture, respectively).243 Maximum LED drive current must be reported for each LED type.244245246247248249 For PFMP (400-700nm), each LED type present in the fixture that has at least25% of its per-device flux in the PPF range must independently meet the Q90 36,000 hours requirement, as shown by a TM-21 calculation. The DLC does notrequire device-level SQD data from applicants and will typically accept theapplicant’s descriptions of a device’s relative PPF while reserving the right torequest explanation.250251252253254255256257 The DLC requires calculated PFMFR for all fixtures with a PFFR output that is equalto or greater than 5% of the fixture’s flux from 400-800nm. For PFMFR (700800nm), each LED type present in the fixture that has at least 25% of its perdevice flux in the PFFR range must report its Q90 duration in hours. The DLC doesnot require device-level SQD data from applicants and will typically accept theapplicant’s descriptions of a device’s relative PFFR, while reserving the right torequire explanation. There is no threshold performance requirement across thisfar-red range; it is a reported value only.258259260261262263264265266oLM-80 applicability: For phosphor-converted “white” LEDs within the ANSI nominal chromaticityrange, the DLC follows the ENERGY STAR Requirements for the Use of LM-80Data published September 2017. Consistent with the ENERGY STARrequirements, for narrow-band emitters, the DLC generally requires an LM-80for each distinct nominal product offered by an LED device manufacturer.Devices of the same type but with different optical codes for beam spread areallowed to cross-apply LM-80 testing. This also applies to products that are inthe same series with differences in nomenclature due to marketing changesTechnical Requirements for Horticultural Lighting V2.1Released June 30, 2021; Proposed effective date September 1, 20219 of 27

267268269270271272273274275276(see series provisions of ENERGY STAR requirements document). The DLCreserves the right to require additional information to approve all claims of LM80 applicability. yProducts must have a manufacturer-provided product warranty of at least five years for fixturesand three years for lamps. The warranty terms and conditions must be provided as part of thesubmittal for qualification. The warranty must cover the complete luminaire and must clearlyexplain the terms and conditions associated with the warranty. Note that “luminaire” includeslight source, housing, heat sink, power supplies, and other electrical components, optics, andany other components such as cooling fans or controls (if present).Warranty terms and conditions can vary widely from manufacturer to manufacturer. The DLCexplicitly defines a warranty period of five years for fixtures and three years for lamps and doesnot have specific requirements for warranty claim terms (e.g. labor, recommissioning, etc.)other than those listed above. The DLC does not verify or validate a manufacturer’s terms,conditions, or process for customer warranty claims. The DLC does not monitor field failurerates of qualified products, or warranty policy redemption or history among manufacturers.Industry stakeholders are urged to review warranty terms and conditions as part of thepurchasing decision process. Driver ISTMTApplicants must supply a technical specification sheet for the driver(s) they use in their product,showing the lifetime of the driver based on operating temperature and the temperaturemeasurement point (TMP) for monitoring the operating temperature of the driver. In-situtemperature measurement testing must be conducted, and a report must be provided with theapplication showing an operating temperature consistent with the driver specification sheetinformation and demonstrating that the driver will have a lifetime of at least 50,000 hours whenoperating at or above the highest rated ambient temperature on the fixture’s specificationsheet. All temperature values shall be reported in degrees Celsius.As noted in the ISTMT description within the flux maintenance section, driver ISTMTs must beconducted and reported in the same manner as thermal testing for safety certification.Specifically, applicants must report the operating temperature of the driver at the fixture’shighest rated ambient temperature within the ISTMT report. This must be done in accordancewith acceptable procedures from safety certification standards for measuring and projectingoperating temperatures. For example, if a fixture is rated for operation at 40 C ambient, ISTMTsare not accepted if they only show the temperature of the driver when measured during a 25 Cambient condition. In this example, appropriate steps must be taken to report the driveroperating temperature when the fixture is operating in a 40 C ambient environment, as definedby the thermal portions of the relevant safety standards.oFor products that may use multiple drivers, specification sheets for each driver must beprovided with the details above. Testing must be conducted on each driver at itsappropriate worst-case input voltage. If a product uses multiple drivers from the samemanufacturer product line or series, as determined by the DLC, then the single worstTechnical Requirements for Horticultural Lighting V2.1Released June 30, 2021; Proposed effective date September 1, 202110 of 27

308309310311312case thermal ambient environment of the product line or series requires a driver ISTMT.Typically, the DLC will operate with the expectation that the operating condition at thehighest wattage in the driver manufacturer’s product line or series is the worst-casethermal ambient environment, but the DLC may ask the manufacturer to providedetailed evidence to document the worst-case driver thermals.313314315316317318319320321322323 324Custom and integrated drivers must provide documentation equivalent to thatrequired for drivers from third-party vendors. Manufacturers must supplydocumentation indicating the maximum acceptable temperature for the driverfor 50,000-hour life, as well as the TMP to be used during thermal testing andevaluation.FansProducts that employ on-board cooling fans must provide a technical specification sheet foreach fan type employed in the product, family group, or spectral sub-group, as applicable. Thefan specification sheet must state the lifetime of the fan and a reference operating temperaturerating for that lifetime claim. The lifetime must be at least 50,000 hours, at an operatingtemperature at or above the fixture’s highest rated ambient temperature.If the product is available with multiple fan models:325326327328329330331oIf fan model variations result in substantively different component temperature orwattage consumption by the fixture (determined at the DLC’s discretion), a familygrouping application is required with model numbers to represent the different fanvariations. DLC reviewers will examine fan model power levels and flow rate todetermine this distinction. Products that offer fan variations without substantivelydifferent component temperature or wattage consumption by the fixture are allowed toqualify using bracketed variations within a single model number.332333oMultiple fan variations require a similar testing and reporting plan to multiple drivervariations, as noted in the efficacy section.334Electrical Performance/Power Quality335336The DLC requires testing and reporting of the following items to characterize the electrical performanceof the fixture:337338339 Power FactorProducts must have a measured power factor of 0.90 at any rated input voltage at full outputor non-dimmed state.340341342 Total Harmonic Distortion, current (THDi)Products must have a measured THDi of 20% at any rated input voltage at full output or nondimmed state.343344345346For products with driver variations, including input voltage variations, electrical testing of each productmust be performed, sufficient to characterize the power quality of each driver, at its applicable nominalinput voltages and maximum designed output power. Testing to demonstrate that products arecompliant with the power factor and total harmonic distortion requirements may be done on an in-Technical Requirements for Horticultural Lighting V2.1Released June 30, 2021; Proposed effective date September 1, 202111 of 27

347348349350351house or benchtop setup for practical simplicity, and results must be documented and included in theapplication materials. Please see the efficacy section for more information on the use of this electricaltesting for worst-case efficacy driver variation determination. Please refer to the Family GroupingTesting Requirements for LED-based Horticultural Lighting for sp

(ANSI/IES LM-80 / IES TM-21 or IES LM-84 / IES TM-28) 400-700nm range, fixture technical specification sheet, and In-Situ Temperature Measurement Test (ISTMT) Photon Flux Maintenance, Far-Red (PFM. FR) Report time to Q. 90. Reported (ANSI/IES LM-80 / IES TM-21 or IES LM-84 / IES TM-28)

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