Secret Lighting LED SL-680 MEGA LED Grow Light

The Secret Lighting SL-680 MEGA LED Grow Light promotes power and efficiency for versatile lighting set-ups.

The SL-680 MEGA LED Grow Light is made for growers who want maximum efficiency and versatility, whether growing in tents, on benches, or dedicated rooms.

Whether used solo or in a shared lighting setup, this fixture delivers exceptional performance.

Known as “MEGA” for its impressive power and adaptability, the SL-680 MEGA emits a bright, full-spectrum white light enhanced with 660nm red diodes. This combination promotes healthy plant growth and high-intensity flowering. With onboard dimming that adjusts from 0 - 100 percent, you have full control to tailor the light intensity to each growth stage with precision.

Designed for efficiency with an industry-leading 3.0 μmol/J output, this passively cooled fixture keeps energy use low while ensuring reliable operation. Its plug-and-play design simplifies setup, allowing you to grow in no time.

For larger-scale operations, the SL-680 MEGA integrates seamlessly with the optional Secret Lighting Control (sold separately), enabling advanced features like external dimming, sunrise/sunset programming, and scheduling for up to 250 fixtures.

The SL-680 MEGA is ETL-certified and DLC Hort-listed, adhering to rigorous safety and efficiency standards. With an IP65 rating for wet environments, this fixture is durable and dependable, backed by a five-year warranty.

Secret Lighting LED SL-680 MEGA Highlights

Footprint

5 x 5 Vegetative and 4 x 4 Flowering Footprint

Light Spectrum

Full-spectrum + 660nm red diodes

Power and Output

680 watts, 3.0 μmol/J efficiency

Certifications and Warranty

ETL-certified, DLC Hort Listed, IP65 Wet Rated, Five-year warranty

Secret Lighting LED SL-680 MEGA Grow Light Features

Full Spectrum Lighting

The SL-680 MEGA features bright white light with added 660nm red diodes for all growth stages, from seedling to flowering.

Onboard Dimming

Easily adjust light intensity from 0 - 100 percent for precise control.

High Efficiency

The SL-680 MEGA delivers an industry-leading 3.0 μmol/J for energy savings and optimal performance.

Quantum Board Design

The SL-680 MEGA is ideal for single or shared lighting setups, providing consistent coverage above the canopy.

Plug-and-Play Setup

The SL-680 MEGA includes all necessary cords, power supply, and mounting hardware for quick installation.

Scalable Control

The SL-680 is compatible with the Secret Lighting Control (sold separately) for advanced customization and scheduling.

Secret LED Secret Lighting SL-680 MEGA LED Light Specifications

Watts	680
Voltage	100-277volts, 50-60hz
Amperage	120V (5.66A) / 240V (2.83A) / 277V (2.45A)
PPF (light output)	2040 µmol/s
PPF/Watt	3.0 µmol/J
BTU's	2320
Operating Temp	-4 to 95 F
Lifetime	50,000 hours
Mounting height	6-36″ (152-914mm)
Certifications	ETL, DLC, CE, Hort
IP rating	IP65
Dimensions	36’’ x 35.43’’ x 1.97’ (914x900x50mm)
Weight	17.0 lbs
Warranty	5 Years

Secret Lighting LED SL680 MEGA Manual

Secret Lighting LED SL-680 MEGA Spec Sheet

Secret Lighting LED SL-680 MEGA Warranty

Secret Lighting LLC offers a 5-Year Limited Warranty

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Secret Lighting LED SL-680 MEGA LED Grow Light