PHOTOBIO TX LED, 680W, 100-277V S4, (10' 277V L7-20P Cord)

Fan-Free Toplight for 277V L7-20P Circuits, 680W

Greenhouse growers who supplement natural sunlight often trade light output for shadow, since a bulky fixture blocks some of the very light it's meant to add. The PHOTOBIO TX 680W is a slim linear LED toplight that uses a closed-loop heat-pipe system to move heat away from the diodes without fans, holding a low profile above the canopy while running quietly.

This configuration ships with a 10-foot 277V L7-20P locking cord, sized for 20-amp 277V twist-lock circuits.

Key Features & Benefits

• 680W Heat-Pipe Cooled Design — a closed-loop heat-pipe system draws heat away from the diodes and dissipates it without fans, so the fixture runs fan-free.
• 1768 µmol/s Photon Flux at 277V — delivers 2.6 µmol/J efficacy for greenhouse and indoor canopy lighting.
• S4 Full-Spectrum LED — a tuned spectrum supports vigorous vegetative growth and flowering.
• Auto-Adjusting 100-277V Driver — senses facility voltage automatically across a 100-277V range and can be remote-mounted away from the fixture.
• DLC Listed and IP65 Rated — model H-8BP06EV qualifies for utility rebate programs in eligible regions and is sealed against water and dust intrusion.

Who Should Use the PHOTOBIO TX 680W

This fixture fits greenhouse growers who want to supplement natural light without adding significant shadow, along with indoor growers who need a slim, fan-free toplight that leaves more headroom for canopy training. Facilities standardizing on PHOTOBIO's Communications-Tree cabling can add multiple TX 680W fixtures to the same AC power and DC signal network.

About PHOTOBIO

PHOTOBIO builds horticultural LED fixtures across multiple wattages and spectrum options, from compact vertical-rack lights to full-size toplights, with DLC certification supporting utility rebate eligibility where offered. This TX 680W fixture is backed by a 5-year warranty from the Hydrofarm team.

Frequently Asked Questions

How is the PHOTOBIO TX 680W cooled?

A closed-loop heat-pipe system draws heat away from the diodes and dissipates it without fans. This keeps the fixture running quietly and avoids the added maintenance that fan-based cooling brings to a grow room.

Will this fixture shade my greenhouse crop?

Its slim linear profile is built to minimize shadowing of natural sunlight, so growers can supplement light in a greenhouse without significantly blocking the sun overhead. Indoors, the same low profile leaves more clearance for canopy access and plant training.

What voltage range does the driver support?

The onboard driver auto-adjusts across a 100-277V input range, so the same fixture works on standard 120V circuits as well as 208-277V commercial service. The driver can also be remote-mounted away from the fixture for easier access.

What cord options are available for the TX 680W?

TX 680W fixtures are available configured with a 208-240V cord, a 277V L7-15P cord, a 277V L7-20P cord, or bare leads for direct hardwiring. Each SKU ships with one specific cord configuration, so confirm which one you're ordering.

Can multiple TX 680W fixtures be networked together?

Yes, the fixture is compatible with the PHOTOBIO AC Power Distribution Tree and DC Communications Tree, which link multiple fixtures in a room to shared power and control wiring. This simplifies wiring in rooms running many fixtures on the same circuit.

What is the warranty on this fixture?

The TX 680W carries a 5-year warranty backed by the Hydrofarm team. Save your order confirmation or receipt in case a warranty claim comes up later.