01 — Description
Présentation du produit
The GL420W LED FIXTURE from Treegers is a LED lighting solution designed to maximize the yield of your indoor crops. With a coverage of up to 1.2 x 1.2 m , this lamp ensures even light distribution and optimal penetration thanks to its six LED bars and its compact plug & play design .
Advanced technology for optimal lighting
Power and efficiency : consumption of 420W ±5% for a light production of 1155 μmol/s .
Luminaire efficiency : up to 2.8 μmol/J , ensuring excellent light output.
Diode efficiency : performance reaching 4.2 μmol/J .
Uniform distribution : light coverage from 1.0 x 1.0 m to 1.2 x 1.2 m .
Advanced thermal management : passive cooling for efficient heat dissipation.
Lighting designed for durability
Long service life : more than 60,000 hours of use.
IP66 protection rating : protection against water and dust for maximum reliability.
Dimmable 0-100% : Precise adjustment of light intensity with the Treegers Precise T Dimmer 0-10V .
External control compatible : can be used with the Treegers Growcast or any other universal controller.
A simple and efficient installation
120° lighting angle : optimal diffusion over the entire plant cover.
Compact dimensions : 680x700x42 mm for minimal space requirements.
Light fixture weight : 5.08 kg , easy to handle and install.
1.8m power cable with Jnicon connector .
Fixings included : Comes with 2 stainless steel cables .
Lighting performance and uniformity
Thanks to an optimized arrangement of diodes and optical lenses, the GL420W LED FIXTURE guarantees a homogeneous distribution of light over the entire growing surface. Its advanced design reduces shadow areas and ensures maximum light absorption by plants.
Robustness and reliability
Durable coating : silicone protection on diodes and waterproof connections for better durability.
Minimal degradation : less than 10% light loss after 5 years of use .
Components tested under extreme conditions for prolonged efficiency.
An optimized light spectrum
Full-Spectrum Fusion : designed to support all phases of plant growth.
Diode combination 4000K, 5000K and 660nm for vigorous growth and abundant harvests .
Superior Performance : Designed to deliver the best cost-effectiveness on the market.
Flexible payment and fast shipping with GrowLED
Payment facilities : possibility of paying in 3x, 4x or 10x by bank card .
Optimized shipping : fast shipping from our logistics centers in France and Spain .
Responsive customer service : personalized advice for installation and use.
Order your GL420W LED FIXTURE today
Don't compromise on the quality of your indoor lighting. Opt for a high-performance, durable and economical LED luminaire . Order now on GrowLED and boost your crops with the GL420W LED FIXTURE !
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04 — Questions sur ce produit
Product questions
Your questions about this product
- Does the passive thermal dissipation of the GL420W under intense continuous lighting ensure optimal stability of the PAR and prevent premature degradation of the diodes during a SCROG LED cultivation on 1.2x1.2m?
Yes, the passive thermal dissipation of the GL420W is well designed to ensure optimal stability of the PAR flux during intense continuous lighting. This passive thermal management effectively maintains the temperature of the diodes, thereby reducing the risk of premature degradation. This luminaire is particularly suitable for SCROG cultivation on a 1.2x1.2m surface, perfectly covering this area while ensuring a long lifespan for the LEDs.
- Effective consumption versus efficiency: with a stable consumption of 420W +/-5% and a light output of 1155 μmol/s, the GL420W offers an energy efficiency of up to 2.8 μmol/J. What is the actual consumption ratio in practice on the ground, taking into account dimming from 0-100% and real growing conditions?
The GL420W consumes nominal 420W ±5% with a theoretical yield of 2.8 μmol/J. In practice, the use of dimming from 0-100% allows for adjusting the power consumption according to the specific needs of each crop, often below the maximum power. This means that the actual consumption varies and can be optimized to reduce the energy bill without compromising growth. The effective light yield also depends on ambient conditions (temperature, humidity) and the type of plant grown, which affect the required light intensity.
In summary, thanks to dimming, it is common to observe an average consumption lower than 420W, with a μmol/J ratio close to the nominal or slightly above, depending on the applied intensity and environment. This makes the GL420W a flexible and energy-efficient solution for indoor LED cultivation suited to various plant profiles.
- Can two GL420W LED FIXTURE be used in parallel on the same installation while maintaining optimal thermal management without the risk of overheating?
It is entirely possible to use two GL420W LED FIXTURE in parallel without the risk of overheating, thanks to their very efficient passive cooling system. To ensure optimal thermal management, you simply need to ensure sufficient spacing between the two units to avoid heat accumulation, as well as good ventilation in your growing space.On the electrical side, make sure that the power supply can handle the combined load of about 840W and use a compatible controller to synchronize the two panels. This way, you fully enjoy the power and reliability of the GL420W while ensuring a safe and durable installation.
- What is the precise impact of passive cooling on the temperature of the LEDs during peak brightness at 420W and how does it influence the eventual reduction of luminous power after several hours of continuous use?
The passive cooling of the GL420W, through effective thermal dissipation, keeps the temperature of the LEDs stable even at full power of 420W. This prevents overheating that could reduce luminous efficiency and the lifespan of the LEDs. Thanks to this system, the luminous power remains almost constant during several hours of continuous use, significantly limiting degradation. Thus, the GL420W ensures stable intensity and increased longevity, even during sustained brightness peaks.
- What is the difference in light penetration and yield between a 420W SCROG lamp like the TG GL 420W with passive cooling and a similar model with active cooling for a 1.2 x 1.2 space under full spectrum LED SCROG LST?
The main difference between a 420 W passive cooled SCROG LED lamp, such as the LUMINARIA LED GL420W, and a similar model with active cooling lies in thermal management. Active cooling, thanks to fans, maintains a lower and stable temperature, which optimizes light output and improves light penetration under the SCROG net in your 1.2 x 1.2 m space.
Passive cooling, silent and without additional energy consumption, relies on an efficient heatsink. It offers good performance as long as the ambient temperature remains moderate, but in case of high heat, light output and thus penetration may slightly decrease.
In summary, active cooling ensures a more consistent yield and better penetration over time, while passive cooling favors simplicity and discretion without notable loss in normal conditions.
- Can the Treegers Precise T Dimmer 0-10V be used to adjust the light intensity on two GL420W lamps in parallel, or does each lamp require a controller?
It is entirely possible to use a single Treegers Precise T Dimmer 0-10V to adjust the light intensity of two GL420W LED FIXTURE lamps in parallel. This dimmer supports up to 50 LED luminaires without loss of stability or voltage drop, ensuring precise and reliable lighting control for both fixtures simultaneously. No individual controller per lamp is needed.
- gl420w led fixture, effective for micro-culture 1m2 in compact space? Does passive thermal management limit the power over long duration?
The LUMINARIA LED GL420W is perfectly suited for micro-cultivation on 1 m² in a compact space. Its power of 420 W, combined with a homogeneous coverage of approximately 1 x 1 meter, ensures optimal lighting thanks to its full spectrum and high luminous efficiency (up to 2.8 μmol/J).
Regarding thermal management, the GL420W uses a highly efficient passive system with aluminum heat sinks, ensuring excellent heat dissipation without a fan. This design limits luminous degradation to less than 10% over 5 years and allows for over 91% of the diode power to be retained after 50,000 hours of use. Thus, power is not limited in the long term, even without active cooling.
In summary, this durable and compact light combines performance and reliability, ideal for effective cultivation in constrained spaces.
- Is the GL420W compatible with silent extraction for a small surface of 1.2x1.2 m?
The GL420W LED FIXTURE is perfectly suited for a growing area of about 1.2x1.2 m thanks to its full spectrum and light efficiency. Its passive cooling design enhances sound comfort, which pairs well with silent extraction. Its IP66 protection rating ensures good resistance to dust and moisture, a plus when using an extraction system.
However, it is not specifically designed to optimize noise reduction related to extraction, so depending on the exact setup of your silent installation, care must be taken to integrate the extraction system to minimize noise disturbances.
- What are the concrete advantages of the full spectrum 4000K, 5000K, and 660nm for my hydroponic plants compared to a lamp with a more classical spectrum?
The full spectrum 4000K, 5000K, and 660nm of the GL420W LED FIXTURE is ideal for hydroponic cultivation as it covers the essential needs of plants at each stage:
- 4000K provides warm light that can support germination and the early stages of growth.
- 5000K promotes efficient photosynthesis and robust foliage during the vegetative phase.
- 660nm in red light is key to stimulating flowering and fruit formation, an advantage often missing in classical spectrums.
This combination ensures harmonious growth and optimal yield, while also offering remarkable energy efficiency and a long lifespan of the equipment. It’s a versatile choice that perfectly adapts to the specifics of your hydroponic cultivation.
- What is the impact of passive thermal dissipation on the performance and durability of the GL420W luminaire in an indoor growing environment heated for several hours a day?
The passive thermal dissipation of the LED LUMINARIA GL420W relies on natural convection, without built-in fans. This means that in a heated indoor environment and with prolonged use, heat can accumulate more easily around the LEDs. This thermal elevation may slightly reduce the luminous efficacy of the panel and, in the long term, impact the durability of the LEDs, which are sensitive to high temperatures.
To optimize the performance and maximize the lifespan of the GL420W, it is essential to ensure good ventilation and a well-tempered growing environment. By limiting ambient heat, you allow the passive system to dissipate heat smoothly, thereby ensuring optimal lighting in the long run.
- What is the extent of the actual optimal light coverage in intensive cultivation with the GL420W over a regular area of 1.2 x 1.2 m?
The GL420W provides optimal light coverage in intensive cultivation over a regular area of 1.2 x 1.2 m. This dimension allows for a homogeneous distribution of light, with a good balance between light penetration and the uniformity of the PPFD, thanks to its design with six LED bars and suitable optics.
On a smaller area, such as 1.0 x 1.0 m, the light intensity will be more concentrated, but the recommended area to maximize intensive performance still remains 1.2 x 1.2 m, which is 1.44 m².
- Does the warranty really cover LED failures or brightness control after 1 year of intensive indoor cultivation?
The GL420W LED comes with a 3-year warranty that covers manufacturing defects, potentially including LED failures or malfunctioning brightness control. If a problem occurs during this period, the product is replaced.
However, there is no very specific information regarding the specific coverage related to intensive indoor use. For maximum safety, it is recommended to ensure proper use and good maintenance to optimize the lifespan of your lighting.
- What is the noise level of the GL420W LED fixture and is it compatible with a silent ventilation system to limit noise without compromising ventilation?
The GL420W LED uses a passive cooling system, which means it generates almost no noise, unlike lighting with active fans. This silent operation pairs perfectly with a silent ventilation system to ensure good airflow without noise nuisance. You can thus limit the noise of your installation while ensuring an optimal environment for your plants.
- What is the best method to integrate the GL420W LED Fixture into a 1x1m SCROG setup under LED without losing light penetration?
To integrate the GL420W LED Fixture into a 1x1m SCROG setup, it is essential to position the lamp correctly. Place it at an optimized height for uniform distribution across the entire surface, testing different positions to maximize the PPFD without loss of intensity.
Use the SCROG trellis to keep the plants at the same horizontal level, ensuring that each bud receives light effectively while limiting overlaps that reduce light penetration.
Take advantage of the high-performance diodes of the GL420W and, if possible, adjust light intensity via a controller to perfectly match your plants' needs.
Finally, consider regular cleaning of the light surface to avoid diminishing its performance due to dust accumulation.
- Is the Treegers Precise T Dimmer 0-10V included with the luminaire or must it be purchased separately?
The Treegers Precise T Dimmer 0-10V is not included with the GL420W luminaire. To enjoy the dimming function or control several lights simultaneously, it must be purchased separately. This controller allows for the management of up to 50 luminaires without power loss, making it ideal for a modular and scalable installation.
- What is the average power consumption of the GL420W in dimmable mode at 50 percent without performance loss for growth?
The average power consumption of the GL420W LED light in dimmable mode at 50% is approximately 210 W. This corresponds to half of its maximum power of 420 W, without significant loss of performance for growth, thanks to the optimization of light intensity. The light efficiency of 2.8 μmol/J is thus maintained under ideal conditions, allowing for energy savings while ensuring optimal plant development.
- What are the practical advantages of the passive cooling of this GL420W LED FIXTURE model in terms of maintenance and noise during indoor cultivation?
The GL420W LED FIXTURE features passive cooling due to its aluminum heat sinks, offering several practical advantages for your indoor cultivation:
- Noise-free: without fans, this system operates silently, creating a quieter and more pleasant environment.
- Low maintenance: the absence of moving parts significantly reduces the risk of failure, making maintenance simpler and the lamp more reliable over the long term.
- Efficient heat dissipation: heat is well dissipated, which stabilizes the temperature of the LEDs and extends their lifespan while maintaining good luminous efficiency.
These features make this panel a robust and practical solution for demanding indoor cultivation.
- What is the maximum temperature that the GL420W lamp can reach during a complete cycle in continuous operation and is there a risk of overheating for the plants due to passive cooling?
The GL420W LED LUMINAIRE utilizes a very efficient passive cooling system thanks to its aluminum radiators, ensuring optimal heat dissipation without a fan. The exact maximum temperature of the lamp in continuous operation is not specified, but thermal management guarantees LED stability, preventing any internal overheating.
For the plants, the risk of overheating is very low: the system avoids hot spots and maintains a stable temperature, even during extended lighting. It is recommended to cultivate in an environment between 20°C and 30°C for ideal performance, with a tolerance up to 45°C of components for more extreme conditions.
In summary, the GL420W is designed to protect your crops while providing powerful and stable light over the long term.
- How does the GL420W connect to the Growcast controller or to a universal system to automate light management?
The GL420W LED FIXTURE connects to the Treegers Growcast or to a universal system via a suitable cable to allow light management between 0% and 100%. Generally, this communication uses a 0-10V control signal, standard in horticultural automation.
For the Growcast, you need to connect the GL420W with the specific cable provided or compatible (not publicly detailed), while a universal system must support the 0-10V protocol to correctly control the light intensity.
Once connected, you can program lighting cycles and adjust the power precisely according to your crop's needs. For optimal installation, it is advisable to check the product manual or the controller's instructions to ensure compatibility and exact connections.
- How do you integrate dynamic light intensity management with this fixture via an external controller under variable growing conditions?
The GL420W LED FIXTURE 420W integrates dynamic light intensity management via a 0-10 V progressive dimming system, with multiple lighting levels from 0 to 100%. This dimming is controlled by an internal dimmer Treegers Precise T Dimmer 0-10V, which easily connects to an external controller, such as the Treegers Growcast or any other compatible 0-10 V system.
Under variable conditions, this control allows for precise adjustment of light power according to growth phases or environmental parameters, without compromising spectral quality or LED durability. This adaptability thus ensures optimal performance and increased energy efficiency throughout the growing cycle.
- Is the LED GL420W from Treegers, with a power of 420W, suitable for a micro-culture of 60x60 cm in terms of light coverage and penetration?
The
LED LUMINARIA GL420W from Treegers, with its 420 W and full spectrum, is perfectly suited for a micro-culture of 60x60 cm. Its light coverage is designed for a much larger area (up to 1.2 x 1.2 m), so it provides more than enough light for this space.
Its multi-bar design and lenses optimize light penetration and uniformity, ensuring that each plant receives a stable intensity, promoting healthy and vigorous growth.
In summary, this lamp is not only suitable, it is even slightly oversized for 60x60 cm, which allows for excellent light performance for your crops.
- Is the evolving beginner kit with the GL420W available? Is the LED installation easy and plug and play? What is the time before seeing optimal growth and yield?
The GL420W LED FIXTURE is an excellent choice for a growing beginner kit. Its plug & play multi-linear system allows for quick and easy installation without any particular technical knowledge. You can also adjust the light output via a Treegers dimmer or connect multiple lights to expand the growing area.
Thanks to its full spectrum and power of 420W, you will notice visible growth improvement within the first few weeks. Optimal yield is typically reached after 4 to 6 weeks, especially during the flowering stage. Its robust IP66 design and passive heat dissipation ensure long-lasting reliability without complex maintenance.
If you want to complete your installation, consider the cultivation tents that are suitable for maximizing results.
- Possible integration with a voice assistant for light intensity control and automated programming?
The LED LUMINAIRE GL420W offers light intensity control via a compatible 0-10 V dimmer and can be remotely controlled with external controllers like the Treegers Growcast. However, it does not have native or direct integration with voice assistants (Amazon Alexa, Google Assistant, Apple HomeKit) for voice control or automated programming. For voice control, it would require considering a third-party home automation solution compatible with these controllers, but this remains outside the functionalities offered directly with this lamp.
- How is the 0-10V dimmer controlled in practice with this luminaire to automate the intensity according to the growth phases?
The control of the 0-10V dimmer of the GL420W LED lamp is done via a classic analog connection: the driver receives a voltage signal between 0 V (minimum brightness) and 10 V (maximum brightness). This signal smoothly and continuously modulates the power delivered to the LEDs.
In practice, you connect the two dedicated wires of the dimmer to the 0-10V terminals of the luminaire, respecting the polarity. An external programmable controller adjusts this voltage according to the growth stage of your plants, thus automating the light intensity to match each phase (growth, flowering, etc.).
This system allows you to achieve precise control, for example by programming intensity levels of 0%, 10%, 20%... up to 100%, thereby optimizing plant growth while saving energy.
Reliable and flexible control for a cultivation perfectly adapted to the specific needs of each phase.
- Is the GL420W LED fixture compatible with a multi-box installation to synchronize lighting and optimize thermal management without the risk of overheating in an indoor culture of multiple varieties?
The
GL420W LED LIGHTING is perfectly suited for a multi-box installation. Thanks to its external control system compatible with 0-10 V dimmers, it allows for precise
synchronization of lighting across multiple spaces, even with varieties having different light needs.
Regarding thermal management, its passive cooling through efficient heat sinks and its ventilated design ensure optimal heat dissipation, completely limiting the risks of overheating, even with multiple units operating simultaneously.
Finally, its IP66 rating provides excellent protection against dust and moisture, a definite advantage for maintaining a healthy environment in multi-variety indoor cultures.
- Can this light fitting be used in a small 80x80 box with a silent extractor and an external controller like Treegers Growcast for a complete growing cycle?
The GL420W LED FIXTURE – 420W is perfectly suited for an 80x80 cm box. Its power and coverage (1.0x1.0 m minimum) ensure uniform and sufficient light for your plants throughout the growing cycle.
Its passive cooling prevents extra noise, which pairs ideally with a silent extractor. Moreover, it is compatible with the Treegers Growcast controller for precise and complete light cycle adjustment (dimmable from 0 to 100%).
Finally, with its IP66 protection and very effective full spectrum, this light fitting offers durability, safety, and performance for quality growing in your space.
- Is passive ventilation enough to prevent overheating in a 80x80 cm box for a 1.2x1.2m area?
The LUMINARIA LED GL420W is equipped with an efficient passive cooling system thanks to its heat sinks, ideal for an area of approximately 1.0x1.0 m to 1.2x1.2 m. However, in an 80x80 cm (0.64 m²) box, the lamp is oversized, generating significant light intensity and heat.
In this context, passive ventilation alone may be insufficient to effectively dissipate heat. Therefore, it is highly recommended to add active ventilation — air extraction or circulation — to avoid overheating and ensure an optimal climate for your plants as well as the lamp's durability.
- How is thermal management handled in hot environments with the passive cooling of the GL420W?
The passive cooling of the GL420W LED light is very effective, even in hot environments. Thanks to its high-quality heat sinks distributed throughout the structure and its multi-linear design with six LED bars, heat is absorbed and dissipated uniformly without the need for fans.
This robust thermal management, combined with the IP66 sealing, protects the components and ensures a stable temperature, prolonging the lifespan of the LEDs beyond 60,000 hours. It's a reliable and silent system perfectly suited for indoor growing under high heat.
- Is it possible to integrate the GL420W LED FIXTURE with a voice assistant to easily adjust the brightness remotely?
The GL420W LED FIXTURE allows you to adjust its brightness from 0 to 100% via a 0-10V dimmer, compatible with the Treegers Growcast controller or other universal controllers. However, it does not natively incorporate a function for voice assistant control (Alexa, Google Assistant, Siri).
To control the lighting remotely with voice, one must consider a third-party home automation solution capable of interfacing a compatible 0-10V controller with a voice assistant. This setup requires additional hardware such as a home automation hub or an appropriate gateway, but it remains entirely feasible for flexible management.
- Can the GL420W LED FIXTURE be integrated into an existing home automation system for automatic adjustment of light intensity based on the environmental conditions of indoor cultivation?
The Treegers GL420W LED FIXTURE features a dimming system via 0-10V protocol, controlled by an internal dimmer Treegers Precise T Dimmer 0-10V. This allows it to be integrated into a home automation system capable of managing this protocol to adjust light intensity from 0 to 100%.
For automatic adjustment based on ambient parameters (temperature, humidity, growth cycle), your home automation system needs to be able to:
- Manage the 0-10V protocol,
- Communicate with environmental sensors and transmit commands to the dimmer,
- Be programmed to adjust lighting according to the needs of the cultivation.
The GL420W is thus compatible with home automation systems mastering 0-10V, but you will need to check the configuration of your installation to ensure full support for these functions.
