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    • Active Air Heavy-Duty Floor and Pedestal Fans

      by hostSeptember 7, 2018
      The Active Air Heavy Duty Floor and Pedestal Fans provides superior air circulation with excellent durability. Each unit has been manufactured to ensure safety, reliability, and ease of use. Its motors are redesigned for stronger performance and are built for years of continuous use. They come equipped with industrial strength aluminum fan blades and operates at three speeds (Pedestal fans feature a smooth side-to-side oscillation). The heavy duty pedestal fans are adjustable in height and utilizes a strong heavy base for stability. The floor fans feature whisper-quiet operation and heavy-duty aluminum blades, they are ideal for recirculating lower-lying CO2 in the grow room up through the entire plant canopy or to nurture younger plants during the vegetative stage. Both styles are tough and will easily handle even the harshest grow room environments.
      Strong motor for continuous 24/7 use

      High RPMs
      Durable and reliable
      Three speeds
      Side-to-side oscillation
      Strong aluminum blades
      120V/60Hz
      16468 Views
    • Phantom CMh Reflector, Ballast and Lamp Kit

      by hostJune 6, 2018
      Hydrofarm's new Phantom CMh System combines our Phantom CMh reflector with the multi-voltage Phantom ceramic halide-specific digital ballast and the Philips double-jacketed Master Power CDM Elite Agro 315W T12 ceramic metal halide lamp.

      Ceramic metal halide technology represents a major advancement in HID evolution. These lamps provide high-quality growth spectrum, amazing PAR per watt performance, and extra energy in the ultraviolet range—which all contribute to increased crop quality. Excellent maintenance of PAR/PPF over long lamp life means great value and far longer re-lamping intervals.

      High efficiency along with high intensity and cutting-edge performance make the Phantom CMh System a smart choice.

      • Excellent PPF (Photosynthetic Photon Flux)—1.95 µmol/s
      • Longevity—90% PAR output at 8,000 hours and 20,000-hour average life
      • Horticulturally-optimized spectrum and increased UV promote enhanced plant quality
      • 3100K lamp included
      • Double jacketed lamp does not require reflector safety lens
      • Digital ballast features low frequency, square wave technology
      • Multi-voltage: 120/208/240V
      • Ideal for low ceilings/tents/vertical gardens
      • 95% reflective European hammertone aluminum specular
      • Optional cooling kit (PHR3150CKT) available (includes a lens system and two 6" flanges)
      800 Views
    • Phantom 315W CMh Reflector with cord set

      by hostMarch 28, 2018
      Phantom 315W - Ceramic Metal Halide Reflector

      For an intense downward light pattern, the PHR3150 is your best choice for performance and value. Multifaceted 95% European hammertone aluminum for excellent light uniformity and diffusion. Patented double-wall design maintains optimum lamp temperature while keeping the reflector cool. Exceptionally consistent delivery of the CMh lamp's superior color spectrum and PAR output.

      • Vertical lamp optimizes downward light delivery
      • Multifaceted design provides superior uniformity, maximum output, and top performance
      • 95% reflective European hammertone aluminum
      • Integrated hangers
      • Built-in 15' cordset
      • Pre-galvanized powder coated body for durability, strength, and longevity
      • Patented cool running double wall design

      Optional Cooling Kit - PHR3150CKT

      For the ultimate in air-cooling your Phantom CMh reflector, pick up the optional cooling kit which includes two 6" flanges and a sealed lens system with latches and safety catch.
      1369 Views
    • Phantom Dual 315W CMH System w/Philips Lamps, 120-240V

      by hostMarch 28, 2018
      The Phantom Dual CMh System is a highly versatile system that allows you to run a single 315W lamp or both at the same time for 630W of high-PAR CMh light. The dual reflectors can be used in the standard position or rotated 90 degrees downward to give a low-profile hanging configuration that is ideal for tight spaces. Four angled reflector positions can also be set, if desired. The reflectors feature multifaceted 95% reflective European hammertone aluminum, giving excellent light uniformity and diffusion.

      The attached Phantom Dual CMh 315W ballast features low frequency, square-wave technology and is silent, reliable, and energy-efficient. It has two discrete channels and power switches, and a USB port for PX1 controller compatibility. Input voltage options are 120V, 208V, and 240V.
      Designed for intense, even coverage over a 3' x 5' growing area
      Philips 4200K color temperature ceramic halide lamps
      Autopilot PX series controller compatible
      Dimming/boosting wattage control
      Proven Phantom reliability and performance
      Flexible hanging options
      32586 Views
    • Phantom 50 Series DE Lighting Systems

      by hostMarch 27, 2018
      The Commercial DE Phantom Lighting System features state-of-the-art double-ended technology that uniformly delivers optimum PAR value over a broad footprint.

      At the heart of this system is the PHB5015 Phantom Commercial DE Ballast with USB Interface. Its USB interface enables connection with the Autopilot PX1 Digital Lighting Controller.

      Rounding out this kit is the reflector of your choice and a European-made premium DE lamp with a rated PAR output of 2100 µmol/s. The Super Deep kit includes an interchangeable PHRW1 Open reflector insert.

      PHB5030 Ballast features:
      • USB interface provides full compatibility with Autopilot PX1 Digital Lighting Controller
      • High-precision microprocessor control
      • Six-way wattage output control: 600W, 750W, 825W, 1000W, and 1150W + PX1 control mode
      • Robust commercial design
      • Superior reliability
      • LED status indicator
      • Internal RF shielding
      • Patented ignition control
      • End of lamp life signal
      • Auto-restrike feature protects valuable lamps from damaging power interruptions
      • Cooling fins for maximum heat dissipation
      • Suitable for use in damp locations
      • Includes a pre-wired 8' 600V 16 AWG power cord with NEMA L8-20P twist lock plug
      • Includes 15' USB-RJ12 Controller Cable Pack

      DE1000Lh (Open) Reflector features:
      • Double-ended system delivers higher PAR value with excellent uniformity
      • Open design for maximum light output, optimum heat management, and longer lamp life
      • Premium aluminum European hammertone interior: 99.85% pure, 95% reflectivity
      • Provides a broad, consistent light spread
      • Compact design minimizes interference with sun in greenhouse applications
      • The ideal reflector choice for lower mounting heights
      • Requires fewer reflectors to meet desired light levels
      • Highly efficient in overlapping multi-light configurations
      • European-made VS K12 x 30s high temperature lamp holders
      • Patented reflector design: D731,109 (and other patents pending)

      PHRD010 Super Deep Reflector features:
      • Double-ended system delivers very high PAR value
      • Intense primary light source designed for higher mounting heights
      • Premium aluminum European hammertone interior: 99.85% pure, 95% reflectivity
      • Deep reflector design utilizes vented roof for optimal heat management and longer lamp life
      • Reflector design concentrates and maximizes light energy
      • A great choice for rooms that require very high PAR at canopy
      • European-made VS K12 x 30s high temperature lamp holders
      DE1000Zh (Enclosed) Reflector features:
      • Double-ended system delivers higher PAR value with excellent uniformity
      • Patented open roof design for ideal lamp operational temperature
      • Premium aluminum European hammertone interior: 99.85% pure, 95% reflectivity
      • Directs light down in a focused pattern
      • Compact design minimizes interference with sun in greenhouse applications
      • Excellent efficiency at higher mounting heights
      • Requires fewer reflectors to meet desired light levels
      • Compounding performance in multi-light configurations
      • European-made VS K12 x 30s high temperature lamp holders
      • Patented reflector design: D731,109 (and other patents pending)
      8335 Views
    • Xtrasun 315W CMH Aluminum Reflector

      by hostMarch 26, 2018
      The Xtrasun XT315AW reflector & cordset kit is the best choice for a ceramic halide reflector if you seek professional performance at the best possible price. It is ready to be combined with a CMh 315W ceramic metal halide lamp (not included) and the Xtrasun XTE3150 CMh 315W digital ballast (not included).

      This reflector will provide an intense downward light pattern from a vertically positioned ceramic halide lamp. A bonus feature is that it allows you to adjust the light spread via four threaded positioning holes in the socket. Using the hole closest to the lamp will give the most focused light spread, while using the hole furthest from the lamp will give the widest light spread.

      Its multifaceted 95% European hammertone aluminum gives excellent light uniformity and diffusion and will provide consistent delivery of the excellent color spectrum and PAR output of any Hydrofarm-recommended 315W ceramic halide lamp.

      -Multifaceted design provides superior light uniformity, maximum output, and top performance

      -95% reflective European hammertone aluminum

      -Vertical lamp orientation optimizes downward light delivery

      -Built-in 15' cordset
      1363 Views
    • AgroBrite T5 Fixture with Lamps

      by hostMarch 20, 2018
      Hydrofarm’s newest T5 system delivers performance, flexibility, and high lumen output in any growing environment. These systems allow you to choose multiple hanging configurations to meet your garden’s design. They combine premium grade specular aluminum with energy-efficient/high-output T5 tubes and put out double the light energy of normal fluorescent systems.


      Daisy chainable—run up to 3 fixtures from a single outlet
      Rated up to 18,800 lumens
      Powder coated steel housing
      Low profile
      Hangs 3 ways—overhead, vertical, or horizontal
      10' grounded power cord
      Includes fluorescent 6400K tubes
      May be daisy-chained together
      2815 Views
    • Agrobrite Designer T5 Fixture with Lamps

      by hostJanuary 5, 2018
      Hydrofarm’s new Designer T5 System delivers performance, flexibility, and high lumen output in any growing environment. These daisy-chainable systems allow you to choose multiple hanging configurations to meet your garden’s design. They combine German specular aluminum with energy-efficient/high-output T5 tubes and put out double the light energy of normal fluorescent systems.

      Features

      Available in 2 and 4-foot units
      2 foot: 2, 4, or 8 bulb
      4 foot: 4, 6, or 8 bulb
      High performance faceted specular aluminum for better light distribution
      May be daisy-chained together
      Powder coated, textured steel housing
      Low profile
      10’ grounded power cord
      Includes appropriate number of fluorescent 6400K, T5 tubes
      1610 Views
    • Active Air Fan Speed Adjuster

      by hostDecember 12, 2017
      Hydrofarm's Fan Speed Adjuster was designed especially for centrifugal fans. This means it will help prevent damage to fan motors, ensuring longer life. (Meant for use with brushless motors, and all Hydrofarm inline fans, not booster fans)

      It will correctly and precisely adjust the speed of centrifugal fans. These controllers are more sensitive than any on the market, and are compact and built to last.

      Features

      Internal electronic auto-resetting circuit breaker
      State-of-the-art electronics throughout
      Rated for 350 Watts max
      120VAC voltage capacity
      Hydrofarm Brand “Other” Brands
      Specifically made for use with centrifugal fans. Correctly manipulates input power sine wave for type of motors being controlled. Made for routers (different style of motor). Incorrect clipping of input power sine wave leads to shorter fan life and excessive noise.
      Higher sensitivity control allows precise flow adjustments. Low resolution voltage control doesn’t allow for proper adjustment of flow.
      Stall speed range eliminated to eliminate fan stoppage. Allows fan to stall if fan speed falls.
      Internal self-resetting circuit breaker in case of over-voltage. Must manually replace fuse and/or reset breaker switch, possibly leading to a scenario where your fan isn’t running for an extended period of time.
      NOTE: Use only with ball-bearing inline/centrifugal fans. Not recommended for use with "squirrel cage" type fans or the 12" Max Fan. For the 12" Max Fan, use speed controller CFH0350290.
      2716 Views
    • Quantum PAR Meter

      by hostDecember 11, 2017
      QUANTUM PAR METER

      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 compared with 2,000 ?mol for other meters on the market.

      • Data logging capability using standard mini-USB cable and proprietary data logging software available at hydrofarm.com

      • Low power consumption with built-in low battery power indication

      • Constant linear response curve (as opposed to other meters’ Gaussian response) yields higher accuracy independent of wavelength—perfect for measuring LED light output

      • Automatic sun or electric light calibration modes ensure accurate readings no matter the source
      6294 Views
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    Active Air Heavy-Duty Floor and Pedestal Fans
    The Active Air Heavy Duty Floor and Pedestal Fans provides superior air circulation with excellent durability. Each unit has been manufactured to ensure safety, reliability, and ease of use. Its motors are redesigned for stronger performance and are built for years of continuous use. They come equipped with industrial strength aluminum fan blades and operates at three speeds (Pedestal fans feature a smooth side-to-side oscillation). The heavy duty pedestal fans are adjustable in height and utilizes a strong heavy base for stability. The floor fans feature whisper-quiet operation and heavy-duty aluminum blades, they are ideal for recirculating lower-lying CO2 in the grow room up through the entire plant canopy or to nurture younger plants during the vegetative stage. Both styles are tough and will easily handle even the harshest grow room environments.
    Strong motor for continuous 24/7 use

    High RPMs
    Durable and reliable
    Three speeds
    Side-to-side oscillation
    Strong aluminum blades
    120V/60Hz
    Categories: Science & Technology
    Tags: 12 inch fan, 18 inch fan, 16 inch fan, active air, heavy duty fan, pedestal, floor fan, hydrofarm, greenhouse, cultivation, propogation, ACFP1016, ACFP2018, ACFV1012, ACFV2018
    Download
    Phantom CMh Reflector, Ballast and Lamp Kit
    Hydrofarm's new Phantom CMh System combines our Phantom CMh reflector with the multi-voltage Phantom ceramic halide-specific digital ballast and the Philips double-jacketed Master Power CDM Elite Agro 315W T12 ceramic metal halide lamp.

    Ceramic metal halide technology represents a major advancement in HID evolution. These lamps provide high-quality growth spectrum, amazing PAR per watt performance, and extra energy in the ultraviolet range—which all contribute to increased crop quality. Excellent maintenance of PAR/PPF over long lamp life means great value and far longer re-lamping intervals.

    High efficiency along with high intensity and cutting-edge performance make the Phantom CMh System a smart choice.

    • Excellent PPF (Photosynthetic Photon Flux)—1.95 µmol/s
    • Longevity—90% PAR output at 8,000 hours and 20,000-hour average life
    • Horticulturally-optimized spectrum and increased UV promote enhanced plant quality
    • 3100K lamp included
    • Double jacketed lamp does not require reflector safety lens
    • Digital ballast features low frequency, square wave technology
    • Multi-voltage: 120/208/240V
    • Ideal for low ceilings/tents/vertical gardens
    • 95% reflective European hammertone aluminum specular
    • Optional cooling kit (PHR3150CKT) available (includes a lens system and two 6" flanges)
    Categories: Science & Technology
    Tags: CMh, hydrofarm, phantom, phantom ballast, philips bulb
    Download
    Phantom 315W CMh Reflector with cord set
    Phantom 315W - Ceramic Metal Halide Reflector

    For an intense downward light pattern, the PHR3150 is your best choice for performance and value. Multifaceted 95% European hammertone aluminum for excellent light uniformity and diffusion. Patented double-wall design maintains optimum lamp temperature while keeping the reflector cool. Exceptionally consistent delivery of the CMh lamp's superior color spectrum and PAR output.

    • Vertical lamp optimizes downward light delivery
    • Multifaceted design provides superior uniformity, maximum output, and top performance
    • 95% reflective European hammertone aluminum
    • Integrated hangers
    • Built-in 15' cordset
    • Pre-galvanized powder coated body for durability, strength, and longevity
    • Patented cool running double wall design

    Optional Cooling Kit - PHR3150CKT

    For the ultimate in air-cooling your Phantom CMh reflector, pick up the optional cooling kit which includes two 6" flanges and a sealed lens system with latches and safety catch.
    Categories: Science & Technology
    Tags: hydroponics, phantom, seemh, c.m.h., cmh315, hydrofarm
    Download
    Phantom Dual 315W CMH System w/Philips Lamps, 120-240V
    The Phantom Dual CMh System is a highly versatile system that allows you to run a single 315W lamp or both at the same time for 630W of high-PAR CMh light. The dual reflectors can be used in the standard position or rotated 90 degrees downward to give a low-profile hanging configuration that is ideal for tight spaces. Four angled reflector positions can also be set, if desired. The reflectors feature multifaceted 95% reflective European hammertone aluminum, giving excellent light uniformity and diffusion.

    The attached Phantom Dual CMh 315W ballast features low frequency, square-wave technology and is silent, reliable, and energy-efficient. It has two discrete channels and power switches, and a USB port for PX1 controller compatibility. Input voltage options are 120V, 208V, and 240V.
    Designed for intense, even coverage over a 3' x 5' growing area
    Philips 4200K color temperature ceramic halide lamps
    Autopilot PX series controller compatible
    Dimming/boosting wattage control
    Proven Phantom reliability and performance
    Flexible hanging options
    Categories: Science & Technology
    Tags: dual cmh, hydroponics, grow lights, commercial line, phantom, 315 CMh
    Download
    Phantom 50 Series DE Lighting Systems
    The Commercial DE Phantom Lighting System features state-of-the-art double-ended technology that uniformly delivers optimum PAR value over a broad footprint.

    At the heart of this system is the PHB5015 Phantom Commercial DE Ballast with USB Interface. Its USB interface enables connection with the Autopilot PX1 Digital Lighting Controller.

    Rounding out this kit is the reflector of your choice and a European-made premium DE lamp with a rated PAR output of 2100 µmol/s. The Super Deep kit includes an interchangeable PHRW1 Open reflector insert.

    PHB5030 Ballast features:
    • USB interface provides full compatibility with Autopilot PX1 Digital Lighting Controller
    • High-precision microprocessor control
    • Six-way wattage output control: 600W, 750W, 825W, 1000W, and 1150W + PX1 control mode
    • Robust commercial design
    • Superior reliability
    • LED status indicator
    • Internal RF shielding
    • Patented ignition control
    • End of lamp life signal
    • Auto-restrike feature protects valuable lamps from damaging power interruptions
    • Cooling fins for maximum heat dissipation
    • Suitable for use in damp locations
    • Includes a pre-wired 8' 600V 16 AWG power cord with NEMA L8-20P twist lock plug
    • Includes 15' USB-RJ12 Controller Cable Pack

    DE1000Lh (Open) Reflector features:
    • Double-ended system delivers higher PAR value with excellent uniformity
    • Open design for maximum light output, optimum heat management, and longer lamp life
    • Premium aluminum European hammertone interior: 99.85% pure, 95% reflectivity
    • Provides a broad, consistent light spread
    • Compact design minimizes interference with sun in greenhouse applications
    • The ideal reflector choice for lower mounting heights
    • Requires fewer reflectors to meet desired light levels
    • Highly efficient in overlapping multi-light configurations
    • European-made VS K12 x 30s high temperature lamp holders
    • Patented reflector design: D731,109 (and other patents pending)

    PHRD010 Super Deep Reflector features:
    • Double-ended system delivers very high PAR value
    • Intense primary light source designed for higher mounting heights
    • Premium aluminum European hammertone interior: 99.85% pure, 95% reflectivity
    • Deep reflector design utilizes vented roof for optimal heat management and longer lamp life
    • Reflector design concentrates and maximizes light energy
    • A great choice for rooms that require very high PAR at canopy
    • European-made VS K12 x 30s high temperature lamp holders
    DE1000Zh (Enclosed) Reflector features:
    • Double-ended system delivers higher PAR value with excellent uniformity
    • Patented open roof design for ideal lamp operational temperature
    • Premium aluminum European hammertone interior: 99.85% pure, 95% reflectivity
    • Directs light down in a focused pattern
    • Compact design minimizes interference with sun in greenhouse applications
    • Excellent efficiency at higher mounting heights
    • Requires fewer reflectors to meet desired light levels
    • Compounding performance in multi-light configurations
    • European-made VS K12 x 30s high temperature lamp holders
    • Patented reflector design: D731,109 (and other patents pending)
    Categories: Science & Technology
    Tags: Phantom DE, double ended, hydroponics, hydrofarm
    Download
    Xtrasun 315W CMH Aluminum Reflector
    The Xtrasun XT315AW reflector & cordset kit is the best choice for a ceramic halide reflector if you seek professional performance at the best possible price. It is ready to be combined with a CMh 315W ceramic metal halide lamp (not included) and the Xtrasun XTE3150 CMh 315W digital ballast (not included).

    This reflector will provide an intense downward light pattern from a vertically positioned ceramic halide lamp. A bonus feature is that it allows you to adjust the light spread via four threaded positioning holes in the socket. Using the hole closest to the lamp will give the most focused light spread, while using the hole furthest from the lamp will give the widest light spread.

    Its multifaceted 95% European hammertone aluminum gives excellent light uniformity and diffusion and will provide consistent delivery of the excellent color spectrum and PAR output of any Hydrofarm-recommended 315W ceramic halide lamp.

    -Multifaceted design provides superior light uniformity, maximum output, and top performance

    -95% reflective European hammertone aluminum

    -Vertical lamp orientation optimizes downward light delivery

    -Built-in 15' cordset
    Categories: Science & Technology
    Tags: Xtrasun, CMH, Aluminum, Reflector
    Download
    AgroBrite T5 Fixture with Lamps
    Hydrofarm’s newest T5 system delivers performance, flexibility, and high lumen output in any growing environment. These systems allow you to choose multiple hanging configurations to meet your garden’s design. They combine premium grade specular aluminum with energy-efficient/high-output T5 tubes and put out double the light energy of normal fluorescent systems.


    Daisy chainable—run up to 3 fixtures from a single outlet
    Rated up to 18,800 lumens
    Powder coated steel housing
    Low profile
    Hangs 3 ways—overhead, vertical, or horizontal
    10' grounded power cord
    Includes fluorescent 6400K tubes
    May be daisy-chained together
    Categories: Science & Technology
    Tags: Agrobrite, t5, fluorescent, hydroponic, garden greens, winter gardening, seed starting
    Download
    Agrobrite Designer T5 Fixture with Lamps
    Hydrofarm’s new Designer T5 System delivers performance, flexibility, and high lumen output in any growing environment. These daisy-chainable systems allow you to choose multiple hanging configurations to meet your garden’s design. They combine German specular aluminum with energy-efficient/high-output T5 tubes and put out double the light energy of normal fluorescent systems.

    Features

    Available in 2 and 4-foot units
    2 foot: 2, 4, or 8 bulb
    4 foot: 4, 6, or 8 bulb
    High performance faceted specular aluminum for better light distribution
    May be daisy-chained together
    Powder coated, textured steel housing
    Low profile
    10’ grounded power cord
    Includes appropriate number of fluorescent 6400K, T5 tubes
    Categories: Science & Technology
    Tags: t5, fluorescent lighting, hydroponics, indoor gardening, hydrofarm, agrobrite
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    Active Air Fan Speed Adjuster
    Hydrofarm's Fan Speed Adjuster was designed especially for centrifugal fans. This means it will help prevent damage to fan motors, ensuring longer life. (Meant for use with brushless motors, and all Hydrofarm inline fans, not booster fans)

    It will correctly and precisely adjust the speed of centrifugal fans. These controllers are more sensitive than any on the market, and are compact and built to last.

    Features

    Internal electronic auto-resetting circuit breaker
    State-of-the-art electronics throughout
    Rated for 350 Watts max
    120VAC voltage capacity
    Hydrofarm Brand “Other” Brands
    Specifically made for use with centrifugal fans. Correctly manipulates input power sine wave for type of motors being controlled. Made for routers (different style of motor). Incorrect clipping of input power sine wave leads to shorter fan life and excessive noise.
    Higher sensitivity control allows precise flow adjustments. Low resolution voltage control doesn’t allow for proper adjustment of flow.
    Stall speed range eliminated to eliminate fan stoppage. Allows fan to stall if fan speed falls.
    Internal self-resetting circuit breaker in case of over-voltage. Must manually replace fuse and/or reset breaker switch, possibly leading to a scenario where your fan isn’t running for an extended period of time.
    NOTE: Use only with ball-bearing inline/centrifugal fans. Not recommended for use with "squirrel cage" type fans or the 12" Max Fan. For the 12" Max Fan, use speed controller CFH0350290.
    Categories: Science & Technology
    Tags: fan speed controller, ventilation, fan
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    Quantum PAR Meter
    QUANTUM PAR METER

    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 compared with 2,000 ?mol for other meters on the market.

    • Data logging capability using standard mini-USB cable and proprietary data logging software available at hydrofarm.com

    • Low power consumption with built-in low battery power indication

    • Constant linear response curve (as opposed to other meters’ Gaussian response) yields higher accuracy independent of wavelength—perfect for measuring LED light output

    • Automatic sun or electric light calibration modes ensure accurate readings no matter the source
    Categories: Science & Technology
    Tags: lilght meter, micro mol, photosynthetically active radiation, hydrofarm, hydroponics, bulb tester
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