Key Feature
- 4 Channel Adjustable Spectrum
Independent 2 channel control allows flexible spectrum adjustment for different crops and growth stages.
- Different Fixture Types
Lighting solutions for a wide range of growing environments.
- 36W–1200W
Flexible wattage options for everything from compact growing setups to large-scale commercial cultivation.
- Custom Lighting Solutions
From tailored wattage, spectrum, and dimensions to fully customized fixture designs, we develop lighting solutions to meet your specific growing requirements.
Flexible Four-Channel Spectrum Configuration
FY LIGHTING offers commercial grow light platforms that can be configured with two, three, or four independently controllable spectrum channels. In a four-channel system, CH1, CH2, CH3 and CH4 can be assigned according to the required SPD, and each channel can be dimmed independently to change its contribution to the final spectrum. Channel allocation, spectrum ratios, fixture power, length, control method, and other electrical or mechanical parameters can all be engineered around the project requirements.
4-Channel Adjustable Spectrum LED Grow Light Series
Explore FY LIGHTING grow light platforms available with 4-channel adjustable spectrum configurations. Each platform can be engineered with four independently controlled channels to meet different spectrum, wattage, fixture and installation requirements.
The four-channel adjustable spectrum LED grow light series separates the fixture output into four independently controlled electrical and spectral groups. Each channel can carry a narrow wavelength, a white or broad spectrum, or a custom LED mixture. By adjusting CH1, CH2, CH3 and CH4 independently, users can change the contribution of each spectral component and create different combined SPDs for specific growing, research and cultivation requirements.
Up to 120ow power, allowing a direct one-to-one replacement for halogen lamps, with adjustable spectrum functionality.
Up to 800w power, allowing a direct one- to-one replacement for halogen lamps, with adjustable spectrum functionality.
Features 2–4 channel adjustable spectrum, multiple mounting options, and power configurations up to 960W.
2–4 channel adjustable spectrum with multiple mounting options, suitable for various vertical farming spaces.
Tunable spectrum, customizable length, width, and module configuration, IP66 waterproof, and daisy-chainable design.
Tunable spectrum, customizable length, daisy-chainable design, and IP66 waterproof rating.
Product Certification
Our adjustable spectrum LED grow light series is designed to meet the demanding requirements of professional cultivation, delivering safe, stable, and high-performance lighting across a wide range of growing environments.
DLC Certified — Meets high efficiency and performance standards for commercial lighting rebates.
Ensures the product meets strict safety and quality standards set by UL.
Fully protected against dust and powerful water jets for harsh environments.
Complies with European safety, health, and environmental protection standards.
Product Feature
Every fixture in our adjustable spectrum LED grow light series is designed for continuous use in professional growing environments. With independently controlled spectrum channels, stable light output, and energy-efficient performance, the series helps growers tailor lighting to different crops and growth stages while maintaining reliable operation throughout long cultivation cycles.
Supports customizable 2-, 3-, or 4-channel spectrum configurations, enabling independent control of different spectral channels to meet diverse crop, growth-stage, and research requirements.
Compatible with greenhouse control systems, allowing centralized management and automated lighting schedules.
Smooth dimming allows precise adjustment of light intensity to match plant needs while improving energy efficiency.
IP65-rated design protects the fixture from dust and water splashes, making it reliable for humid greenhouse environments.
How Four Independent Spectrum Channels Work
A four channel adjustable spectrum LED grow light separates the fixture’s output into four independently controlled electrical and spectral groups. Each channel can carry a narrow wavelength, a white or broad spectrum, or a custom LED mixture. Adjusting CH1, CH2, CH3 and CH4 independently changes the contribution of each spectral component to the final combined SPD.
CH1 — First Independent Spectrum Component
CH1 controls the first independently driven spectrum group. It can be a single wavelength, a broad-spectrum component, or a custom LED mixture — whatever the project requires as its first independently adjustable spectral variable.
CH2 — Second Independent Spectrum Component
CH2 provides a second spectral group with its own electrical output. Changing CH2 does not disturb CH1. Its spectral content can be another narrow wavelength, a different broad spectrum, or a second custom LED arrangement.
CH3 — Third Independent Spectrum Component
CH3 introduces a third spectral variable. With three independently driven groups already present, adding CH3 gives the fixture three dimensions of ratio control. CH3 can carry a narrow wavelength, a white or broad-spectrum component with a specific CCT, or a custom emitter mix.
CH4 — Fourth Independent Spectrum Component
CH4 is the fourth independently controllable output. Its presence is what distinguishes a four-channel platform from a three-channel one: it provides a fourth spectral variable that can move independently of CH1, CH2 and CH3. Changing CH4 reshapes the combined SPD without affecting any of the other three channels.
Flexible Spectrum Assignment for CH1–CH4
CH1, CH2, CH3 and CH4 can be configured with different spectral components. A channel may use a narrow wavelength such as 450 nm or 660 nm, a far-red component around 730 nm, a white or broad spectrum, or a custom LED mixture.
A four-channel system does not have to use a fixed red, blue, white and far-red combination. The spectrum assigned to each channel can be selected for the required SPD and fixture platform. Each channel is driven and controlled independently, so its output can be adjusted without changing the other three channels.
Changing the output ratio of CH1, CH2, CH3 and CH4 changes the shape of the combined SPD. This gives the same four-channel platform more flexibility for different crops, research targets and lighting strategies.
How Four Independent Spectrum Channels Work
Control CH1, CH2, CH3 and CH4 Independently
Independent channel control is what separates a four-channel fixture from a fixture with four LED types. Where the driver and control architecture support it, each of the four channels can:
- increase output independently
- reduce output independently
- switch off independently while the others remain active
- combine with selected other channels at defined ratios
- produce a different CH1–CH4 output ratio from the previous setting
- contribute to a different combined spectrum output
Example ratio setting:
Channel | Output Level |
|---|---|
| CH1 | 80% |
| CH2 | 40% |
| CH3 | 100% |
| CH4 | 20% |
Adjusting any one of these channels changes three things simultaneously: the individual channel’s contribution to the combined output, the ratio between all four channels, and the shape of the resulting combined SPD. Lower CH2 from 40% to 15%, and the combined SPD shifts — the blue component’s contribution decreases and the three remaining channels now carry proportionally more of the mixed output.
This is what independent channel control actually means: not just a per-channel intensity adjustment, but a ratio and SPD change. A four-channel fixture where all four channels dim simultaneously from a single input is not a four-channel fixture — it is a single-channel fixture with four emitter groups sharing one output.
Engineering note: Independent channel dimming requires four independent control paths from the control source to the driver. A 0–10V controlled four-channel driver, for example, needs four separate control cables, one per channel, each carrying an independent signal. Plan the control cabling architecture before installation — adding it later is not straightforward.
Create Multiple Spectrum Outputs from One Grow Light
One fixture can generate different combined spectrum outputs by changing the relative output of CH1 through CH4. This is one of the most commercially valuable aspects of a 4-channel tunable spectrum grow light: the same hardware produces multiple distinct SPDs without swapping fixtures.
Configuration A:
Channel | Output |
|---|---|
| CH1 | 100% |
| CH2 | 100% |
| CH3 | 100% |
| CH4 | 0% |
All three primary channels at full output, far-red channel off. The combined SPD reflects the full CH1 + CH2 + CH3 mixture with no far-red contribution.
Configuration B:
Channel | Output |
|---|---|
| CH1 | 100% |
| CH2 | 50% |
| CH3 | 80% |
| CH4 | 30% |
CH1 at full output, CH2 halved, CH3 reduced, CH4 contributing at low level. The combined SPD shifts compared with Configuration A — the CH2 component’s proportional contribution falls, CH4 introduces a far-red peak, and the overall mixture changes shape.
Configuration C:
Channel | Output |
|---|---|
| CH1 | 60% |
| CH2 | 100% |
| CH3 | 40% |
| CH4 | 100% |
CH2 and CH4 at full output while CH1 and CH3 are reduced. A third distinct SPD from the same fixture.
These percentages are examples used to explain four-channel ratio control. They are not crop recipes or recommended growing settings. Actual ratios are determined by the target SPD, the project’s research or production requirements, the driver capability, the fixture’s total power, and the LED configuration. The point of the three configurations is not to suggest what ratios you should use — it is to show that three different sets of CH1–CH4 values produce three different spectra from the same hardware.
Four-Channel Control Options and System Integration
CH1 CH2 CH3 CH4 spectrum control only reaches its potential when the control architecture can actually address each of the four channels independently. A four-channel grow light’s spectral flexibility depends entirely on the control system being able to deliver four separate signals. The control system is not a separate consideration from the fixture — it is part of the specification.
Possible control functions (depending on selected driver and controller):
- individual channel dimming for CH1, CH2, CH3 and CH4
- CH1–CH4 spectrum ratio control
- individual channel on/off control
- group control across matched fixtures in a zone
- zone control for different areas in the same installation
- centralized spectrum management from one control point
- preset configurations where the controller supports saved settings
- wired control runs
- wireless control where supported by the selected hardware
- external controller integration with existing facility systems
Control interfaces (confirmed on selected driver and fixture configurations):
- 0–10V
- PWM
- DALI
- Other verified interfaces depending on driver selection
Control interfaces depend on the selected driver, controller and fixture architecture. This qualification is not a disclaimer — it is a practical engineering boundary. A 0–10V analog control circuit carries one signal per wire: a four-channel fixture needs four independent 0–10V runs, one per channel. DALI operates as an addressed bus with segment limits; DMX provides a larger channel pool. The protocol you choose affects how the control system is wired, how many fixtures you can address, and whether integration with an existing facility controller is straightforward or requires a gateway.
FY LIGHTING’s smart agricultural control system provides centralized management of lighting, timing and spectrum for compatible platforms, and the adjustable-spectrum fixture range is documented as compatible with greenhouse control systems for centralized scheduling and automated spectrum management.
Four-channel spectrum control can be integrated into a wider lighting control system when the selected driver and controller support the required interface. Confirm both the fixture’s channel architecture and the facility’s control infrastructure during engineering, not after installation.
Choose the Right 4-Channel Grow Light Platform
FY LIGHTING’s platform range covers different fixture structures, wattage ranges and installation environments. Choosing the right platform for a four-channel build depends on the fixture type the project requires, not on the channel count — the four-channel architecture is available across multiple platforms.
Suitable for projects requiring:
- Low-profile installation with minimal overhead clearance
- Long linear lighting layouts over cultivation rows or gutters
- Rack or shelf installations in vertical farming structures
- Growth chambers and research benches
- Precise row-based illumination in plant factories
Selection factors: fixture length, wattage, mounting clearance, remote or integrated driver, channel wiring layout.
Suitable where projects require:
- Higher total PPF output from fewer fixture positions
- Larger illuminated area from a single mount point
- Higher installation height in tall greenhouses
- Fewer fixtures per production zone with higher per-fixture output
- Large-scale greenhouse supplemental or sole-source lighting
Suitable for:
- Larger grow areas requiring distributed light output
- High-power fixture designs with multiple LED bars
- Commercial installations needing uniform canopy coverage
- Wide-beam distribution across a large footprint
Suitable for:
- Custom configurations where one driver powers multiple light modules
- Multiple fixture groups across defined zones
- Flexible fixture spacing to match different row or rack widths
- Installations that need to be reconfigured as the facility evolves
Suitable for projects requiring a fixture built around specific project constraints:
- Custom fixture length or dimensions
- Custom wattage outside standard platform ranges
- Custom number of bars or modules
- Custom spectrum allocation across CH1–CH4
- Custom driver selection and connector type
- Custom mounting interface or bracket system
- Custom housing or form factor
Platform selection and channel configuration are separate but connected decisions. The platform defines the physical and electrical envelope; the four-channel architecture defines how the spectral outputs within that envelope are configured and controlled.
LED Grow Light Series
Up to 1200W power, allowing a direct one-to-one replacement for halogen lamps, with adjustable spectrum functionality.
Double-sided design, low heat, ideal for climbing crops like cucumbers and tomatoes.
Customizable to fit different vertical farming rack sizes, with multi-channel adjustable spectrum.
Delivering Reliable Lighting for the Most Demanding Environments
At FY Lighting, every fixture is engineered for long-term performance and safety. From explosion-proof lighting for hazardous zones to industrial high-bays and advanced horticulture solutions, our products are built with premium components, rigorous testing, and industry-leading certifications.
No matter the environment—oil & gas, factories, warehouses, greenhouses, or vertical farms—you get stable output, durable construction, and a product designed to solve real-world challenges.
17 Years of Manufacturing Excellence You Can Trust
With a 10,000㎡ facility, in-house R&D, strict QC processes, and advanced testing equipment, we ensure consistent quality in every unit. Our lights meet global certification standards including UL, CE, RoHS, ATEX, and more.
We support OEM/ODM, provide fast engineering response, and offer customized lighting solutions that fit your exact application needs—helping you reduce downtime, improve safety, and enhance productivity.
FAQ About 4-Channel Adjustable Spectrum LED Grow Lights
No. That is one example configuration used to illustrate how four channels might be assigned. Channel wavelengths and spectral contents can be customized around the target SPD, the available LED platform and the project’s specific requirements.
Yes, subject to LED availability, driver architecture, fixture design and electrical limitations. The engineering process defines which wavelengths are achievable within those constraints for the selected fixture platform and wattage.
Yes, where the selected CCT and the corresponding LED configuration are technically feasible within the fixture’s power budget and thermal design.
Yes. Changing the relative output of CH1 through CH4 changes the shape of the resulting combined SPD. The same hardware produces different spectra at different CH1–CH4 ratio settings without any physical modification to the fixture.
Across the FY LIGHTING platform range that supports four-channel configurations, available wattages span from 36W on the RBE series slim bar platform through to 1000W on the TPB series and 960W on the RBI and RBH greenhouse platforms. Exact wattage availability depends on the selected fixture platform.
This is possible in selected configurations, but voltage, current, total power, channel loading and driver capacity must be verified for the specific driver and fixture combination. The RBH rack platform documents a one-driver-to-one-to-four-fixture configuration; other platforms have different specifications. Do not assume multi-fixture capacity from the platform name alone.
Depending on the selected driver and controller, four-channel fixtures may be managed over 0–10V, PWM, DALI or other supported control interfaces. Protocol support depends on the driver architecture and must be confirmed per fixture configuration rather than assumed across the product family.
Yes. Customers can provide a target SPD, spectrum chart, or wavelength specification for engineering evaluation. FY LIGHTING’s engineering team will propose the CH1–CH4 channel allocation, LED selection, channel power split and fixture platform based on the submitted spectrum requirement.
Not necessarily. If two of your four spectral components are always adjusted at the same ratio and never need to move independently, they can potentially share one channel, and a three-channel build may be sufficient. Separate channels are most useful when spectral components need genuinely independent adjustment — not just when a fixture has four LED types.
Yes, when the selected controller, driver architecture and project wiring support group or zone control functions. This is a control system design question as much as a fixture question: the four-channel fixture provides the spectral variables, and the control system determines how they are managed across groups or zones.
Recommended inputs include: target SPD or CH1–CH4 wavelength requirements, approximate output ratios, required wattage, fixture type, dimensions, quantity, IP rating, input voltage, driver location preference, mounting method, control interface and any documentation requirements. Either a known channel configuration or a target spectrum is a valid starting point — engineering can work from both.
CH1 through CH4 can be independently controlled when the driver and control architecture are configured to provide four separate control paths. This is a design requirement, not an assumption: confirming independent channel control means confirming that the driver, the control wiring and the control source all support four distinct outputs.
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