Black Dog LED PhytoMAX-4 4S 250W Commercial LED Grow Light | High-Intensity Series

Key Specs: 250W | 2.14 µmol/J PBAR | 531 µmol/s | 853 BTU/hr | 24 lbs | 5-Year Warranty

Kill Variance. Print Yield.

Every cycle that runs on degrading HPS infrastructure is a cycle you cannot fully account for. Lamp lumen depreciation begins the moment a bulb fires — silently eroding your PPFD targets, widening canopy variance, and compressing margins on every harvest. Manual dimming dead zones mean your operators are chasing setpoints instead of executing protocol. Passive failure points — ballasts, reflectors, aging bulbs — accumulate risk without triggering alarms. The facility is running, but it is not running at spec, and the gap between what you planned and what you harvested is the variance tax you pay every single cycle.

After deployment, that gap closes. Canopy density becomes a documented output, not an estimate. Scheduling runs on automated 0-10V dimming curves rather than manual intervention. Lamp replacement cycles disappear from the maintenance calendar entirely. Operators execute protocol instead of compensating for equipment drift. The facility produces what the model predicts — cycle after cycle — because the light source is no longer the variable.

The mechanism is the PhytoMAX-4 4S 250W platform: 250 watts of draw, 531 µmol/s of photobiologically active radiation output, and a system efficacy of 2.14 µmol/J PBAR across the full Phyto-Genesis Spectrum (350–750 nm) — a range that includes 3% UV content for secondary metabolite expression and near-infrared for canopy penetration. One hundred twelve diodes are driven through 94%-efficient modular drivers, cooled by redundant active fans with over-temperature shut-off, and protected behind a glass lens rated at greater than 99.5% transmissivity. The 0-10V dimming input (15–100%) integrates directly into facility control architecture, and waterproof locking data plugs support daisy-chain deployment across multi-fixture arrays. In practical terms, the PhytoMAX-4 4S 250W delivers 531 µmol/s across its coverage footprint at 250 watts draw, producing 853 BTU/hr of managed thermal load with a rated lifespan of 75,000+ hours.

Where This Belongs (and Doesn't)

Not recommended for circuits under ~2.08A @120V or ~1.04A @240V per fixture, or unsealed rooms lacking HVAC capacity for expected thermal load.

Minimum infrastructure requirement: a dedicated 20A circuit per fixture at 120V, or appropriately rated circuit at higher voltages (up to 277V for 4SC / up to 250V for 4SP). HVAC must be sized to manage 853 BTU/hr per fixture under continuous operation.

Infrastructure Note: The PhytoMAX-4 4S 250W ships with an 8 ft power cord (locking water-tight on 4SC; IEC on 4SP). Confirm circuit capacity, voltage compatibility, and HVAC sizing before deployment. Active cooling requires unobstructed airflow around the fixture enclosure.

How It Works

The PhytoMAX-4 4S 250W operates on Black Dog LED's Beyond PAR technology platform, which extends the photobiologically active radiation window beyond the conventional 400–700 nm PAR range to a full 350–750 nm Phyto-Genesis Spectrum. This means the fixture delivers UV energy starting at 350 nm — accounting for approximately 3% of total output — which drives secondary metabolite expression including trichome density, pigmentation, and cuticle thickness. The far-red and near-infrared content at the upper end of the spectrum improves canopy penetration, enabling lower-canopy sites to receive photobiologically relevant flux that conventional PAR-only fixtures cannot deliver.

One hundred twelve LEDs are arrayed across a 15" x 15" x 4.5" enclosure weighing 24 lbs. Each diode is driven through modular drivers rated at 94% efficiency, minimizing resistive losses and reducing the electrical overhead per unit of photon output. A glass lens rated at greater than 99.5% transmissivity ensures that photon flux is not attenuated at the fixture face. Active cooling via redundant fans maintains junction temperatures within operating limits, and an over-temperature shut-off circuit provides autonomous protection against thermal runaway — a passive failure mode that is eliminated from the maintenance risk profile. The 0-10V dimming input (15–100%) allows the fixture to integrate into any facility-grade lighting controller that outputs a standard 0-10V signal, enabling scheduled intensity curves, sunrise/sunset ramps, and zone-level control without manual intervention. Waterproof locking data plugs allow daisy-chaining across fixture arrays, reducing control wiring complexity in multi-light deployments. In practical terms, the PhytoMAX-4 4S 250W delivers 531 µmol/s of photobiologically active radiation output at 250 watts of electrical draw, with a system efficacy of 2.14 µmol/J PBAR and a thermal output of 853 BTU/hr under continuous operation.

Pick Your Configuration

System Integration

To operate this platform at peak efficiency, verify your ecosystem matches these requirements:

• Lighting Controller: Requires a 0-10V output controller for dimming integration (15–100% range). Confirm controller compatibility with your electrical contractor or controls vendor before deployment.
• Mounting: 24 lbs per fixture — verify structural capacity of racking, truss, or overhead mounting system. Use manufacturer-approved hanging hardware rated for the fixture weight.
• Power Distribution: 4SC accepts 100–277V (50/60 Hz); 4SP accepts 100–250V (50/60 Hz). Confirm circuit amperage and breaker sizing with your licensed electrician prior to installation.
• HVAC Capacity: Each fixture produces 853 BTU/hr under continuous operation. Size HVAC for total fleet thermal load before commissioning.
• Daisy-Chain Wiring: Waterproof locking data plugs support multi-fixture control runs. Plan control wiring topology before fixture placement to minimize field modification.

Facility Integration Data

Use the figures below to model fleet-level electrical and financial impact before procurement. All savings estimates are based on comparison against a legacy 1000W DE HPS baseline and manufacturer-published performance data.

Operator Field Note

• Structural Load: Each PhytoMAX-4 4S 250W fixture weighs 24 lbs. Verify that overhead mounting infrastructure — truss, unistrut, or racking — is rated for the total fleet load before installation. Do not exceed rated load capacity of mounting hardware.
• Electrical — Amperage: At 120V, a 250W fixture draws approximately 2.1A. At 240V, approximately 1.05A. At 277V (4SC only), approximately 0.9A. Size circuits and breakers to NEC 80% continuous load rule. Consult a licensed electrician for final circuit design.
• UV Exposure Warning: The Phyto-Genesis Spectrum includes UV output beginning at 350 nm. Do not look directly at operating fixtures without appropriate UV-protective eyewear. Limit unprotected skin exposure during maintenance operations with fixtures energized.
• Active Cooling — Airflow: Redundant fans require unobstructed airflow around the fixture enclosure. Do not install in configurations that block fan intake or exhaust. Over-temperature shut-off will activate if thermal limits are exceeded — verify room ambient temperature is within manufacturer operating range.
• Environmental Setpoints: Designed for sealed commercial cultivation environments. Confirm room temperature, humidity, and CO2 setpoints are within manufacturer-recommended ranges before commissioning. Thermal output of 853 BTU/hr per fixture must be accounted for in HVAC load calculations.
• Cord and Connection: 4SC ships with a locking, water-tight power cord (8 ft). 4SP ships with an IEC power cord (8 ft). Verify cord length is sufficient for your fixture-to-outlet distance before installation. Do not use extension cords without verifying ampacity rating.

Shipping & Logistics

• Origin: Ships from Cannafull Spectrum Solutions warehouse. Product designed and assembled in Colorado, USA by Black Dog LED.
• Processing: Orders are processed within 1–2 business days of confirmed payment. Tracking information is provided upon shipment. Cannafull Spectrum Solutions ships within the contiguous 48 United States only.
• Damage: Inspect all shipments within 48 hours of delivery. Document any damage with photographs and contact Cannafull Spectrum Solutions immediately at (888) 378-0017 or sales@cannafullspec.com. Damage claims submitted after 48 hours may not be eligible for resolution.
• Returns: Returns accepted within 30 days of delivery. A Return Authorization (RA) number is required before any return shipment. Contact our team to initiate the RA process.
• Restocking Fee: Returns of non-defective items are subject to a restocking fee of up to 25% per our Return Policy. Review full terms at cannafullspec.com/pages/return-policy before ordering.

Questions? (888) 378-0017 or sales@cannafullspec.com

What's in the Box

• Black Dog LED PhytoMAX-4 4S 250W fixture (4SC or 4SP, per configuration ordered)
• 8 ft power cord — locking, water-tight (4SC) or IEC (4SP)

Note: Box contents are based on available manufacturer data. Verify complete contents upon receipt. Contact Cannafull Spectrum Solutions at (888) 378-0017 if any components are missing or damaged.

Regional Compliance & Deployment Notes

Commonly deployed in sealed commercial cultivation facilities across the United States. Installation, HVAC sizing, and electrical requirements vary by jurisdiction; always verify with local code.