The ViparSpectra® P4000 400W LED Grow Light is a high-performance, commercial-grade panel LED fixture engineered to deliver dense canopy penetration and uniform light distribution. Drawing an efficient 400 watts of power, this fixture serves as a direct 1:1 replacement for traditional 800W HPS/MH lighting systems, cutting electricity costs and heat emissions by nearly half. It is designed specifically to cover a 5' x 4' vegetative or 4' x 3' flowering grow space.

Key Features

• High-Efficiency 800W HPS Replacement: Consumes only 400W while producing PAR output equivalent to traditional 800W HID systems.

• Sunlike Full Spectrum: Blends 3000K, 5000K, 660nm deep red, and 730nm IR wavelengths to optimize photosynthesis from seed to harvest.

• Rectangular Canopy Footprint: Perfectly sized to provide even light spread over 5' × 4' vegetative or 4' × 3' flowering areas.

• Flexible Stepless Dimming: Integrated dimming knob (0%–100%) allows precise light adjustment for seedlings, vegetative, and bloom stages.

• Daisy-Chain Capability: Connects multiple lights together for centralized, single-controller dimming across larger grow areas.

• Silent Passive Thermal Dissipation: Solid aluminum heat sinks cool the unit passively with 0 dB noise and zero mechanical fan failure risk.

• Durable Commercial Build: Water-resistant protective coating on LEDs protects components against humid grow tent conditions.

Equipped with premium SMD LED diodes, the P4000 delivers a sunlike, full-spectrum output (combining 3000K warm white, 5000K daylight white, 660nm deep red, and 730nm infrared) to drive vigorous vegetative growth, tight internodes, and heavy flower density. Featuring a built-in flexible dimming knob, daisy-chaining connectivity for multi-fixture synchronization, and heavy-duty aluminum heat sinks for silent, fanless operation, the P4000 provides long-term reliability for home tents or commercial grow rooms.

Product Specifications

• Model: P4000

• Power Draw: 400W ±3%

• HPS Equivalent: 800 Watts HPS/MH

• Input Voltage: AC 100V – 277V (50/60Hz)

• Spectrum: 3000K, 5000K, 660nm Deep Red, 730nm IR

• Vegetative Coverage: 5' × 4' (150 cm × 120 cm)

• Flowering Coverage: 4' × 3' (120 cm × 90 cm)

• Amperage Draw: 3.33A @ 120V | 1.81A @ 220V | 1.66A @ 240V

• Dimming Range: 0% – 100% Stepless Dimming

• Light Distribution: 120° Beam Angle

• Dimensions: 40.0" L × 11.2" W × 3.2" H (101.6 cm × 28.5 cm × 8.1 cm)

• Product Weight: 19.4 lbs (8.8 kg)

• Operating Lifespan: 100,000 Hours