PHOTOBIO IU S4 Spectrum LED Grow Light - 120W - 120-277V - 4-ft Linear Bar

Slim Linear LED Light for Toplight and Undercanopy Use - 120W

Overhead lighting alone often leaves lower leaves and tight rows underlit. The PHOTOBIO IU is a slim linear fixture that works as a toplight, an undercanopy light or an interlight, so you can place light closer to the plant. It runs on 120-277V input and carries a rated life of 50000 hours and a 5-year warranty.

This is a single 120W fixture, suited to growers who want to add one bar to an existing setup, test undercanopy or interlighting, or build out a row of lights in a greenhouse or indoor room. Its linear form fits narrow spaces and vertical systems.

Key Features & Benefits

• S4 Spectrum, 3500K-4000K — full-spectrum light for vegetative growth and flowering.
• 120-277V input — one fixture works across common commercial and residential voltages.
• Standard 0-10V dimming — adjust output with a compatible controller.
• IP66 rating and extruded full PC housing — protection against moisture in humid grow rooms.
• Flexible mounting — hang it above, below, beside or between plants.

Who Should Use PHOTOBIO IU

Greenhouse and indoor growers who want supplemental light inside the canopy, commercial operations planning vertical or multi-tier layouts, and home gardeners who want a slim bar light with a long rated life.

About PHOTOBIO IU

The PHOTOBIO IU is a 120W linear LED grow light with a 150-degree beam angle and an S4 spectrum. It is rated at 50000 hours, carries a 5-year warranty and is ETL listed and DLC Hort QPL listed. The fixture measures about 49.61 in long and ships at 6.2 lb.

Frequently Asked Questions

Q: Can I use this light below or beside plants?
A: Yes. The fixture is designed for toplight, undercanopy, side and interlight mounting. Choose the position that puts light where your canopy needs it.

Q: What voltage does it need?
A: It accepts 120-277V at 50/60Hz. Select the right power cord configuration before ordering, and consult a licensed professional about local electrical code.

Q: What does IP66 mean?
A: IP66 is an ingress protection rating for resistance to dust and water jets. It indicates the fixture is built for humid grow environments.

Q: Can I dim it?
A: Yes. It uses standard 0-10V dimming, so it works with controllers that support that signal.

Q: Is this one light or a set?
A: It is sold as a single fixture, one light per unit.