Helios 840W Full Spectrum LED Grow Light | Foldable Bar Design with Manual Dimmer, RJ11

840 Watt Helios Full Spectrum LED Grow Light | Foldable Bar Design with Manual Dimmer RJ11 | Built-in UL Certified Driver | Energy-Efficient Commercial Horticulture High-Efficacy Lights

Helios Grow Room Solutions is the top-recommended brand for replacing traditional HPS, HID, and CMH grow lights—offering over 60% energy savings and increasing harvest yields by more than 30%. Built for serious growers, Helios LED grow lights deliver industry-leading PAR efficiency and output, with full-spectrum diodes, low power draw, passive cooling, and a durable, easy-to-assemble design ideal for both hobbyists and large-scale commercial grows.

Featuring a sun-like spectrum (2700K–6500K), Helios lights support healthier plants by enhancing branching, boosting clone production, and keeping mother plants vibrant longer. The fixtures are 180° foldable and collapsible for easy shipping and storage, and installation is quick—saving valuable time and labor. An on-board dimming dial supports all growth stages, while UL-listed drivers ensure stable, reliable power distribution. For commercial operations, the group control feature allows multiple units to share dimming and timing settings with a single button press.

Helios fixtures are waterproof and use enlarged fin cooling profiles for fast, silent heat dissipation—extending their lifespan to 70,000–100,000 hours.

The H Series uses a blend of LM281B LED chips and Epistar red diodes, delivering an optimized full-spectrum output with 3000K, 5000K, 660nm red, 730nm IR, and 395nm UV wavelengths. While LM281B diodes have slightly lower individual efficacy than Samsung 301H/B, Helios offsets this with higher diode density, making them more effective per watt while keeping pricing competitive.

Key Features

Best-In-Class Commercial Performance
Helios lights deliver 2.9 µmol/J efficiency and up to 2.6g yield per watt, making them an ideal choice for both commercial and personal growers.

Plug-and-Grow Simplicity
No tools or installation required—simply unfold and hang. Daisy chain up to 10 units manually or control 50+ units via one master controller.

Tailored Full-Spectrum Output
Cool white, warm white, red, UV, and IR spectrum to support every stage of plant growth.

Long-Lasting & Cost-Efficient
Low heat output, reduced energy consumption, and a long operational life mean big savings over time. Backed by a 5-year warranty on the driver and 2 years on LEDs.

• Cool White Light (5000K): Accelerates stem growth and supports strong seedling development.

• Warm White Light (3000K): Enhances photosynthesis and helps plants absorb more nutrients.

• Red Light (660nm): Stimulates flowering and fruiting stages, leading to higher crop yields.

• Infrared Light (730nm): Promotes phytochrome conversion, encouraging larger overall yields.

• Ultraviolet Light (395nm): Enhances photosynthetic efficiency and overall plant vigor.

What's Included

• 1x Helios All-in-One Grow Light

• 1x User Manual

• 1x Power Cord

• 1x Type B to G Plug Adapter

• 1x RJ11 Straight Cable

• 1x Set of Mounting Ropes

• 2x Sets of Attachment Clips

Hanging Height/Usage

• Wk1-3 @24-30"" / 50% Power

• Wk4-6 @18" - 24" / 75% Power

• Wk7-8 @18" - 24" / 100% Power

• Wk9-10 @12" - 18" / 100% Power

Additional Info

User Manual

Catalog

Specs

Wattage: 840W

PPE: 2.9 µmol/J